Posted on

Sound bars

A television with sound bar (below), subwoofer (to left) and assorted controlling devices on the bench for sound bar sound, tv operation, and input of text (from left to right). Jellyfin, connected to our server, is our primary source of content. We have also used Netflix. I have heard Now and Then by the Beatles, but on YouTube and another device, not on this television or from Netflix.

The first words written in this post were sound bars, in the title. As the text body emerged and grew, it became obvious that these devices had to be put in context. Yes, sound bars are important, but they are only one solution of many. Thus, without changing the title, I have allowed this post to present many different solutions to providing or preventing sound from enhancing or detracting from life. Sound bars are one of many appropriate solutions to the challenges presented by sound, for people with relatively normal hearing. For people with hearing disabilities another weblog post is being prepared about hearing loops, and other devices to help people hear better.

In my youth, the brother of one of my friends had made a reputation for himself, producing radio commercials for the Seattle WA area. I learned a lot about sound visiting this brother’s studio in the late 1970s. He had started his career as a DJ, where the goal was to have the largest listening audience, for his station’s audience segment. To do this he optimized his programming with a playback system using a single 3″ (75 mm) speaker, because that was the size and type of speaker found on most radios at the time. He wanted to optimize the sound for the average listener. Competitors, he said, most often used expensive, professional playback equipment. They fine-tuned their music and commercials to play optimally on audiophile equipment. He claimed that what that meant in reality, was that it sounded bad on the equipment most listeners used.

This event impacted me. I appreciate sound. I enjoy listening to music, the human voice and soundscapes, especially those in nature, but also industrial and artificial soundscapes, as long as I can reduce the sound levels. I have my hearing limitations, related to tinnitus, where listening to low decibel (dB) sound levels of music can be regarded as therapy. Almost by definition, I can never become an audiophile.

I am never quite sure where real audiophiles can be found. My experience with self-proclaimed audiophiles is that they are obsessed with discussing sound rather than listening to it. It is very likely that I have a prejudiced view of the phenomena. That will not prevent me from discussing this topic further.

It is often claimed that Audiophiles require sounds to be curated. First, every audiophile has a preferred medium: most often vinyl, but sometimes reel-to-reel tape or even CDs. Second, sounds need to be optimized for the listening environment, using equalizers so that sound produces perfect sound intensity (dB) characteristics at all frequencies humans can hear, typically 20 – 20k Hz. Third, those with hearing imperfections, will not hear these perfect sounds as intended. Of course, the sound system could be set up for a particular individual, but that would mean that everyone else would have a sub-optimal experience. Fourth, human speech in the soundscape, not to mention any other sound-producing activities, has to be avoided. That is because your average audiophile uses equipment has been designed for use in anechoic chambers = ultra quiet rooms, that are without echoes and are otherwise non-reflective. Indeed, many anechoic chambers are designed not just to stop sound reflections, but also electromagnetic waves. These rooms are often insulated to prevent energy from entering. This means a person (or more often, a detector, possibly a microphone) hears sounds directly. This rule is the one most often broken.

What I have experienced is that modest equipment, one step above entry level (read: cheap) is good enough for most people, including myself. As people age, and their hearing worsens, it is more important to avoid the extremes.

Soundscapes

People encounter many different soundscapes in their daily lives. When people enter a different soundscape, sometimes they have to use devices that can enhance or diminish sounds encountered. A soundbar is only appropriate in a limited number of these.

All of our family members have been issued their own -34 dB ear muffs/ defenders. We also have two additional pairs for guests, that can be borrowed. In addition, disposable ear plugs are also available. These are to be worn in the kitchen, workshop and even out on the lawn, when noisy (> 80 dB) machines can be used.

Ear muffs offer more protection at higher frequencies than ear-plugs, are designed to fit most people and can be adapted quickly and with little effort. Usage can be easily monitored. Their bright yellow colour means that they cannot be easily misplaced or lost. They can be worn with minor ear infections. When guests return them, they are cleaned so they are always available for others.

In other soundscapes, such as bedrooms or office spaces, headsets are frequently used, so that sounds produced there do not infiltrate other (typically adjacent) soundscapes. Needs vary. Many people will prefer in-ear models, others over-the-ear. The in-ear models will be wireless, as will some over-the-ear models. Some want to allow spoken voices in the room to penetrate their headset space, others want to avoid this. It is not simply a matter of taste. Preferences may be tempered by employers/ schools providing free equipment.

All residents who want them have been issued their own headsets. The difference between headphones, that only provide loudspeakers, is that a headset also contains a microphone. Ours are various Logitech G Pro models. Most guests saying with us, bring their own ear pods with them, but we can find suitable headsets if these are preferred. This allows people to engage in numerous activities such as listening to podcasts and music, or indulging in gaming. They can also be used for work or study.

Children’s bedrooms and adult’s home offices now need more computing equipment than they used before the pandemic, such as video cameras. In addition, people need faster internet speeds. Work and study computers supplement leisure oriented (read: gaming) computers. Many people prefer to use laptops, others opt for desktop machines. Younger eyes don’t seem to object to smaller screens. Older ones want larger screens, with the modern ideal being a 34″ ultra-wide in 21:9 or 32:9 format.

Over the 2020s, housing will continue to be modified to provide private work and study spaces. An important part of this will be sound insulation in various forms. People who have the opportunity to do so will also wire their residences with Ethernet cables, rather than relying on Wi-Fi. At Cliff Cottage all rooms have wired Ethernet coverage.

The pandemic altered work life, for many people. The office is no longer of supreme importance. Open office landscapes and open seating are disliked, not just for their disease spreading ability, but because they are inappropriate environments for accomplishing work, because of the numerous disruptions they promote. People appear to be more productive when they work from home. Thus, while there has been some rebound to the office after the pandemic, my prophecy is that this will decline in the coming years, stopping at about one day a week, mainly for meetings, by mid century.

Soundscape Case 1: At the local cooperative store, where most of our groceries are purchased, there has been a change in the appearance of staff. The store is open from 07:00 to 23:00. The retired population of Inderøy usually shops there between about 09:00 and 11:00, sometimes later, but usually avoiding the rush of workers heading to and from work, as well as the lunch hours when school children invade the store. With the retired population present, most of the staff are busy stocking shelves, but simultaneously listening to podcasts or music fed to their ear pods from their smartphones. Their listening does not impact anyone negatively, including themselves, provided they are listening at moderate sound levels.

Soundscape Case 2: At the opposite end of the scale are the råners = boars (literal translation from Norwegian), referring to people (mostly males) who have cruising roads and streets as their primary hobby. They typically transform their rear-wheel drive cars into high powered (typically 1 000 W) sub woofers. Their presence can be felt before they can be heard, or seen. The liberty råners take, negatively impacts others.

Sound bars

Sound bars can be disruptive, and incompatible with the work and study habits of individuals. They can be enjoyed in selective common areas, most often a living room, that can provide an audio-visual experience that can be shared by a group of people, typically referred to as a family. In offices, sound bars are also suitable when used with large screens or projectors for meeting use.

In the 1950s and 1960s, the number of audio and video devices in a living room increased in number. There were turntables for playing LPs and other types of records, tape decks of assorted formats for playing and recording tapes, followed by CDs in the 1980s. These were connected to amplifiers and speakers . For video, there were other developments such as VHS cassettes, laserdisks, DVDs and Blu-ray disks, along with dedicated players. Content also took up large amounts of wallspace.

In the 21st century machines for playing audio and video content, as well as the content themselves, started to disappear. Content was stored on files, that could be located in a cloud = someone else’s server, and/ or on one’s own devices, including servers. The most omnipresent device today is a hand-held device = smartphone.

The dominant element in a living room is now a large flat-screen television. Size varies from about 32″ (80 cm) to 80″ (over 200 cm). On 2023-11-27, we entered the modern age, when a Net-on-Net Andersson, QLED5031UHDA model, from , with a 50″ 4K (3840 x 2160) QLED screen, was delivered. It was not a sophisticated product, but gudenuf for our needs.

Smart televisions have become hubs, integrating components and services. Having owned one for less than two months, I have not mastered them, and have not started to modify one yet. This will come. Yet, there have been changes. Previously, a home theatre computer functioned as a hub. It took content from the internet as well as our server, displaying video an a 40″ (100 cm) screen. Audio was sent to an active speaker system with a built-in bass unit. It sent mid- and high range audio to two bookshelf speakers. These components have all been eliminated.

The audio challenge with flat-screen televisions, in contrast to their cathode ray tube (CRT) predecessors, is that they lack volume, as in three-dimensional space, to produce realistic sounds. Thus, television manufacturers have encouraged the use of sound bars and subwoofers to enhance sound.

A sound bar is a linear sound system, with built-in amplifiers and speakers positioned in a long but narrow and low box below a television screen, often fixed to a wall, but sometimes placed on a low bench. It is often accompanied with a separate box, containing a subwoofer speaker, that produces the bass notes.

Suggestion: Before acquiring a sound bar, measure the walls or surfaces where it could be located. This will provide information about the maximum length (often called width), height and depth available. Ensure that there is space on all sides of the soundbar. Speakers need volumes of air, to move sound into a room.

We have acquired an Andersson SRS 2.4 soundbar with subwoofer and remote control. It was part of a package deal with the flat screen television. It also supports Dolby Atmos surround sound technology, although we are not using it. Many people use satellite speakers to add surround sound effects, which simulates three directional sound. This topic will not be discussed any further here, but may be a topic for a future weblog post.

Cables connecting audio-visual components are important because their quality can significantly impact enjoyment of a product. When not in use, we store cables of the same type in separate plastic storage bags, with important data about them written on the bag. Increasingly we are marking each cable, and sometimes each end (if the connectors differ) on small cards with length, type, and other important characteristics written on it. Transparent tape is then used to attach the card to the cable, and to cover both sides of the card.

Two of the most common connectors/ interfaces for digital audio are S/PDIF = SPDIF = Sony/Phillips Digital Interface, and HDMI = High-Definition Multimedia Interface. Each uses their own specific type of cable, with S/PDIF being considerably thinner than HDMI cable.

SPDIF transmits only digital audio, using two different approaches: coaxial and optical. We have avoided coaxial cables and use Toslink = Toshiba link, a standardized optical cable system. It is preferred because it uses fiber optic cables, which are immune to electrical interference; it provides superior isolation and reduces the risk of ground loops; it is better for long-distance transmission due to its excellent signal integrity; it supports multi-channel audio formats like Dolby Digital and DTS.

If two pieces of equipment don’t share the same connector type, they can be joined using converters.

Theoretically, the best sound bar audio input option is HDMI (ARC) where: ARC = audio return channel. ARC sends audio from the television to the sound bar. HDMI also transmits digital video. On our system we started off using HDMI (ARK), but found we got better results using Toslink.

Sound bars typically allows input from two other types of inputs: USB-C and 3.5 mm jacks. They also support various types of music files, including high resolution streams of up to 24-bit/192kHz.

Digital audio provides higher fidelity compared to analogue audio because it does not allow noise to be added to the audio signal. Despite the claims of some hi-fi enthusiasts, digital is better than analogue.

CD, DVD, Blu-Ray and others players are quickly fading into the past, except when enthusiasts attempt to reclaim outmoded technology. In some parts of the world antennas will be used to access some content. Increasingly, more of it will come in through internet connections. In our municipality, antennas – including satellite dishes, are antiques from the past.

Most people will operate their audio-visual equipment with a remote control device or, increasingly, just a smartphone. Chromecast, in particular, can be used to transfer content from phones, tablets, laptops or similar devises to a television, and allow them to be played. Sometimes a keyboard can be useful to input text. We have a Logitech K400 keyboard for this purpose.

As with any new system, it can take time to learn operational procedures. Sometimes instruction manuals assume people know how to use the equipment! Initially, we write operating procedure proposals on a sheet of paper which can be modified as we learn more about system operation. After some time, a clear set of instructions emerges. We then transfer this information to the front of a book used to record viewing information.

Yes, we are so obsessive that we record data about each viewing of a documentary, television episode or movie, including series and episode number and its names, along with the first name initial of viewers present (mostly family members), and the date.

We store paper copies of all instruction manuals in a 50 litre plastic storage box. They are available if we need to access information. Increasingly, we are storing digital pdf files of instructions as files inside our server, so that they are accessible to anyone with a computer.

Fond memories

If you are over the age of 20, your days of being able to hear high-frequency sounds has ended. I remember a class who had acquired a device that could produce loud high-frequency sounds. When they turned it on in the classroom, they could all hear the noise this produced, but I was totally oblivious to it. Only their laughter gave it away.

Posted on

Hydrogen myths

The Mid-Continental Rift System, where white hydrogen could be produced. Source: United States Geological Survey, 2023-12-05

Hydrogen is an important element in a number of compounds, including water (H20), methane (CH4) and ammonia (NH3). In my opinion it is not an effective energy carrier. The accessible energy is stored in electrons.

One hypothetical question about hydrogen is to ask if pipelines should be built to move H2 to other places, or if it is better to move electrons using high-voltage direct current ( HVDC) transmission? It is hypothetical because no energy analyst without a vested interest in pipelines, would bother to ask the question. They know the answer is HVDC.

One avoids a lot of confusion, if the starting point for understanding energy transmission is exergy. Two (slightly modified) paragraphs from Wikipedia can provide a foundation, even if it takes time for one’s brain to understand the concept: Exergy, often referred to as available energy or useful work potential, is a fundamental concept in the field of thermodynamics and engineering. It plays a crucial role in understanding and quantifying the quality of energy within a system and its potential to perform useful work. Exergy analysis has widespread applications in various fields, including energy engineering, environmental science and industrial processes.

From a scientific and engineering perspective, second-law [of thermodynamics] based exergy analysis is valuable because it provides a number of benefits over energy analysis alone. These benefits include the basis for determining energy quality (or exergy content), enhancing the understanding of fundamental physical phenomena, and improving design, performance evaluation and optimization efforts. In thermodynamics, the exergy of a system is the maximum useful work that can be produced as the system is brought into equilibrium with its environment by an ideal process. The specification of an ‘ideal process’ allows the determination of ‘maximum work’ production. From a conceptual perspective, exergy is the ideal potential of a system to do work or cause a change as it achieves equilibrium with its environment. Exergy is also known as ‘availability’. Exergy is non-zero when there is dis-equilibrium between the system and its environment, and exergy is zero when equilibrium is established (the state of maximum entropy for the system plus its environment).

With that out of the way, in the course of this post, one will look at four academic papers. The two earliest academic papers considered here, got numerous facts wrong, the other two got some things right. The first two were: Relative costs of transporting electrical and chemical energy (2018) by Saadi et al and Cost of long-distance energy transmission by different carriers by DeSantis et al (2021).

One assumption, in both papers, is the existence of a large source of green hydrogen molecules available at a single location suitable for putting into a 1 000 km pipeline. Hydrogen plants, close to existing pipelines, don’t use green hydrogen but grey hydrogen based on a centralized natural gas steam reformation system. For a short explanation of hydrogen’s colours scroll down to the end of this post.

The papers assume green hydrogen is inexpensive to manufacture: $1 per kilogram in the 2018 study; $2-$4 per kilogram per the 2021 study. Yet, green hydrogen uses 50 – 60 kWh of firmed electricity per kilogram to manufacture. Firmed electricity costs about $0.10 per kWh, unless one is using massive legacy hydroelectricity facilities found in Norway, Quebec and British Columbia. Here $0.5-$0.06 per kWh could be found. Firmed is a term used to describe energy that can be constantly provided at a needed rate and at a fixed cost.

A better estimate of the manufacturing cost of hydrogen is $5 to $10 per kilogram.

There are also incorrect assumptions about the capacity of HVDC transmission lines, underestimating capacity. In 2019, a Chinese 1 .1 MV = 1 100 kV link was completed. It traverses a distance exceeding 3.3 Mm = 3 300 km = 2 100 miles with a power capacity of 12 GW.

At the end of every line (pipe, as well as transmission), energy has to be distributed onward. Electricity is part of a high efficiency (read: cheap) distribution grid. Hydrogen is expensive to distribute, often relying on trucks with specially made pressurized tanks. While gray hydrogen costs $1-$2 to manufacture, it currently sells for €15 to €25/ kg to consumers in Europe and $30 to consumers in California. Much of this difference in price is due to distribution costs.

Both papers ignore that hydrogen as an energy carrier has to be used. Molecules are less efficient than electrons. Fuel cells offer only about 50% efficient in turning H2 into electricity, while electricity stored in batteries is much more efficient.

Burning hydrogen for heat under 200° C = 392 ° F competes directly with heat pumps, which are three times as efficient on average, and in industrial settings usually even more efficient. This means there is no need for H2 for residential or commercial heating.

The vast majority of industrial processes working above 200°C are electrifiable, typically with efficiency gains over using burnable fuels. The hydrogen pipeline studies ignore this inconvenient truth.

A Norwegian DNV (previously Den norske veritas) study, Specification of a European Offshore Hydrogen Backbone (2023) produced a report for The European Association of pipelines. It is slightly more realistic than the 2018 and 2021 studies, but still contains major flaws. It contends that green hydrogen can be delivered to the end of a transmission line for €3.21 per kilogram in 2050, and that this is cheaper than the transmission of electrons. It uses more expensive HVAC transmission rather than HVDC transmission, and exaggerates these transmission losses compared to hydrogen pipeline efficiencies. They also overstate transmission line operating costs, despite the fact that HVDC has no moving parts while pipelines have lots of moving parts, such as pumps.

Despite all of the unrealistic benefits given to H2, it’s still ten times more expensive to transport than liquid natural gas (LNG). Michael Barnard commenting on the report in CleanTechnica, contends that the report “was structured to meet the need of the clients to pretend that manufacturing molecules of hydrogen offshore at wind farms and then constructing pipelines all the way to major demand centers was the most cost effective model, and the DNV analysts contorted numbers and the space time continuum until the client’s needs were satisfied.”

Hydrogen pipelines vs. HVDC lines: Should we transfer green molecules or electrons? (2023) by the Oxford Institute for Energy Studies is better. It starts with the same amount of electricity at the beginning of the pipeline and HVDC = 9.6 GWh. They then apply most electrolysis facility energy losses before putting hydrogen into the pipeline, and apply the much smaller efficiency losses to electricity before it gets into transmission.

They calculate the energy delivered at the end of the pipeline to be 1.15 – 5.71 GWh , with an average value of about 3.4 GWh or a 34% delivery rate. At the end of the transmission line, there is 7.872 – 8.832 GWh, with an average value of 8.35 GWh or 87% delivery rate.

Yes, there is considerably more energy at the end of the transmission line. The hydrogen pathway delivers only 40% of the energy compared to the electron pathway. In economic terms, that means that energy from H2 will cost 2.5 times what it costs using electricity.

Much of the rest of the report can be filed under magic/ apologetics for the H2 industry, with unsupported contentions, and unrealistic costs: too little for hydrogen, but too big for electricity.

Other weaknesses in the report include failure to explain how one can get firmed electricity in sufficient quantities to an offshore electrolysis facility economically, or to take into account construction costs. In addition, electrolysis is simplified, missing several components such as a hydrogen dehumidifier.

At the other end of the pipeline, exergy is not taken into account. They treat the energy delivered as molecules and the energy delivered as electrons as being equal. Fuel cells are only 50% efficient at turning hydrogen into electricity. This means that using hydrogen requiring 5 times as much electricity, in contrast to using electricity directly or with intermediate storage using batteries or capacitors. To produce heat < 200° C, 7.5 times as much electricity is needed, For heat > 200° C, an electric option is almost always more efficient.

I will not state that there is no market for hydrogen for energy, and look specifically at the aviation industry. However, there are no hydrogen pipelines planned (that I can find), although some designs exist. There are many HVDC transmission lines approved, under construction and in operation.

There is a market for H2 as a feedstock/ commodity. In the United States the most economical way of producing it is to pump water down to hot iron-rich rock to extract white hydrogen in the Mid-Continental Rift System (MRS) = Keweenawan Rift. This can be done at an industrial scale. The rift is about 2 000 km = 1 200 miles long, in the center of the North American continent but south-central part of the North American plate. It formed when the continent’s core = the North American craton, began to split apart during the Mesoproterozoic era, about 1.1 billion years ago. When the rift failed, it left behind thick layers of igneous rock that are exposed in its northern reaches, but buried beneath later sedimentary formations along most of its western and eastern arms. This rift is also an important location for metals, but that is a topic for another day.

Conclusion: It makes no economic sense to put electrons into electrolyzers to make H2, then to put that H2 into pipelines. Hydrogen is an ineffective carrier of energy. No hydrogen pipelines will be built to transport energy. HVDC transmission lines will carry electrons everywhere. If H2 is needed as a feedstock, it will be manufactured at the point of use, to avoid transportation costs.

Notes: The various colours of hydrogen are a shorthand way of discussing hydrogen production characteristics. These were listed in an earlier weblog post, although white hydrogen was missing. In summary these are: black/ brown = from coal; grey = from methane/ natural gas; green = from surplus renewable energy; yellow = from solar (my personal usage, others use orange); orange = from mixed sources, including up to 50% non-renewables; red = from mixed sources where non-renewables exceed 50%. pink = from nuclear energy; turquoise (in general use) = purple (my personal usage) = more climate friendly blue hydrogen, such as methane pyrolysis. White (or gold) = hydrogen made by natural processes.

Posted on

Words of the Year 2023

Principal language families of the world (and in some cases geographic groups of families). Original work by: Zachary Leshin (1990 – ) = PiMaster 3, 2013.

While the focus of Words of the Year 2022 was on social justice, in 2023, one cannot escape the fact that the world is heading towards an environmental catastrophe. Global warming is real, and will continue to happen, with western consumers the primary agents of change, while the citizens of the rest of the world pay for its consequences.

Part of this year’s efforts in appraising words of the year, is to allow readers to determine the meaning of a resurrected word: Technohygiene. Now, for the first time ever in this weblog, people get to determine what this word actually means. This is not a matter of multiple choice. The word is given, what should it mean?

January – Quiet Hiring

Quiet hiring is when an organization acquires new skills without actually hiring new full-time employees. It can mean hiring short-term contractors, or current employees could move temporarily into new organizational roles.

There were some predictions that 2023 would result in a recession, which could point to a slow down in hiring, but not a hiring freeze or layoffs. The main challenge is that there is a talent shortage, mentioned in 2022, that hasn’t gone away. This means it’s harder to increase or even maintain a head count, at the same time there is a desperate need for talent, so that companies can meet (potentially exceed) their ambitious financial goals.

Hiring usually falls into one of three categories: staffing existing roles, creating new roles or addressing an immediate need. Quiet hiring is only concerned about that third category. It prioritizes the most important functions at a given time.

Now, if only employers would ensure that work resulted in improved health for employees and the planet. I note that this term isn’t used in Scandinavia, where the majority of workers belong to trade unions, including this writer, until 2023-12-01, when I resigned from Norsk lektorlag – a union for teachers.

February – Snye

There are times when I can be found using the Internet. Much of that time is spent exploring the world, and discovering new features about it, including examining old as well as new maps. This led to Snye.

Snye refers to a side-channel, especially one that later rejoins the main stream/ channel. Sometimes it refers to a backwater. It is a Canadianism, used mainly in Ontario. The word was discovered by looking at a map of the Chenal Ecarté aka The Snye, a river in the municipalities of Saint Clair and Chatham-Kent in Southwestern Ontario, Canada. It is a left distributary of the St. Clair River that flows to Lake St. Clair, and thus is part of the Great Lakes Basin.

The word is probably adapted from chenail (in Quebequois) a variant of standard French chenal. Chenal comes from canālis in Latin = waterpipe/ conduit, possibly derived from canna = reed/ pipe. Canna is related to the Ancient Greek kánna, from Semitic origins, such as the Akkadian qanū = reed, and related to modern Arabic qanāh = canal/ channel; and, Hebrew qāneh = cane/ reed/ stem.

Latin derivates of canna in English include: canal, cane, canister, cannoli, cannon, canon, canyon, channel. Also related is the surname Chanel.

Snye was first recorded in English in the 1810s.

March – Complisult

Yes, this is the art of combining a complement with an insult. It comes from the NBC television show Community. In more ancient times, it was known as a backhanded compliment. An example: I like your shirt, it almost fits you. A complisult, first sets the recipient up, by saying something nice, to allow that person to start trusting. Then comes the insult, designed to let the recipeint feel an inferior status.

Trump is a master of the complisult: I’ll say it with great respect: Number one, she’s not my type. Number two, it never happened. After he says: I’ll say it with great respect, the follow up phrase is a dismissal.

With complisults, one is entering the domain of a gaslighter/ narcissist incapable of giving a conventional compliment. The complisult serves two purposes. First, it leads the recipient to a false sense of security. Second, it allows the gaslighter/ narcissist gain something. As soon as the recipient gives them something, perhaps just a smile, they respond with the insult or, at best, a comment that shows indifference.

April – Funemployment

The root of this word is not employment, but unemployment. Instead of regarding unemployment as a problem, it is seen as an opportunity.

For months, the above two sentences, were all that I had written about Funemployment. As publication of this post approached, I wondered, if I should seek out a different word as a replacement. Fortunately, writing something else entirely, I looked up synonyms for similar, on thesaurus.com.

On 2023-12-18, dictionary.com (sibling site to thesaurus.com) announced that it was going to present a vibe of the year! Vibe(s) = the overall feel of a situation or person.

Their choice was eras = periods of time in a person’s life characterized by something distinctive and noticeable, such as a particular emotional state, relationship, achievement, or interest. Retirement is possibly one such era.

They explained, vibe of the Year “is based on the shared sense that we’re all looking for ways to define the perpetually shifting stages of our cultural and personal histories.”

Having been funemployed for seven years, but with a secure source of income, it is useful to appreciate the vibes this period of time brings with it.

May – Baby Chasing (v) / Baby Chaser (n)

Zonda Chief Economist Ali Wolf, explains there’s a big overlap between select baby boomers and select millennials. They are often competing for the same houses, the former downsizing into retirement houses, the latter stepping on the first rung of the property ladder with a starter residence. The key difference between the two groups is that boomers have equity, in the form of their current debt-free house, while millennials have less. Boomers are attempting to help their less fortunate offspring by selling up and moving close to provide extra help rearing the pandemic babies. These movements are tracked in Zonda’s Baby Chaser Index. Austin, specifically, along with Texas and other locations in the sun belt, more generally, are top locations.

Millennials have pushed up home prices in recent years as demand outweighs supply. Yet, this situation will start to reverse over the 2020s, as Baby Boomers begin aging out of the housing market, while post-Millennial generations are smaller, leading to population growth declines, or even reversals. This could lead to excessive housing in the market, reducing prices.

Reading about this phenomenon once again in 2023-08, it appears that American real estate analysts had underestimated the number of residences boomers would need. Somehow, they had not realized that widowed boomers would want to retain their independence, and would not want to move into someone else’s residence.

June – Salt tooth

The Irish News tells us “… more than 40 per cent of people have a weakness for salty rather than sugary flavours. Experts call this phenomenon a salt tooth, and it’s becoming more common. For while some people are genetically programmed to crave salt, others are now developing a salt tooth as a result of the prevalence of highly processed, salty food in our diet.”

Salt contributes to the gluttony crisis. People are eating more than they need. In part, this is because agricultural production has exceeded dietary needs. Greed encourages these excessive production levels. Initially, global food companies thought they were be able to profit from this, by exporting their surplus. However, surpluses became more of a world phenomenon. So, these companies responded by encouraging increased consumption = gluttony.

There are places in the world that are resisting gluttony. Gianni Pes and Michel Poulain (1947 – ) developed the concept of blue zones resulted from demographic work in Nuoro, Sardinia, published in 2004. People concerned with diet should probably investigate The Blue Zones, popularized by Dan Buettner (1960 – ) by reading books, watching videos or listening to podcasts. There is even a short introduction available online.

July – Global boiling

UN secretary general, António Guterres (1949 – ) noted that scientists confirmed 2023-06 was on track to be the world’s hottest month on record. He said the era of global warming had ended and “the era of global boiling has arrived”.

Thermal reflective paint is produced by Cool Roof France (CRF). It claims to be on a mission to reduce the ambient temperature inside buildings in a sustainable and cost effective way, by painting roofs white! White paint is traditionally made up of calcium, solvent and water. Calcium? In France, more than 130 Gg = 130 000 Mg = tonnes of oyster shells are thrown away every year. CRF takes a few tonnes of this waste and uses the outer part of the shell – which is made from calcium – to replace other sources of calcium in its paint.

Yet, oyster shells offer another advantage, it produces a more durable paint. The thermo-reflective roof paint is applied in three layers. The first two layers make it a durable product which will last for around 20 years. The third layer is able to reflect 90 per cent of the sun’s rays away from a building, resulting in an average temperature reduction of six to seven degrees Celsius. In France, this means a 30 – 50 % reduction in air-conditioning (read: energy) usage. For further information, see this Euronews article.

Here at Cliff Cottage, I am considering painting our black metal roof white.

August – Noctalgia = sky grief

Along the sins of developed nations is a propensity to pollute air and water and to create massive amounts of carbon dioxide, that is dumping into the atmosphere triggering global boiling. If this is not enough, the haves have significantly increased light pollution. Aparna Venkatesan (University of San Francisco) and John C. Barentine (Dark Sky Consulting) have coined a new term to help focus efforts to combat light pollution. Noctalgia captures the collective pain humankind is experiencing, as it continues to lose access to the night sky.

To tackle noctalgia, a movement has sprung up across the globe to create dark-sky reserves, where surrounding communities pledge not to encroach with further expansions of light pollution. Elon Musk is not part of this effort. Satellite-based light pollution will require international cooperation and pressure on companies like SpaceX to be better stewards of the skies they are filling with constellations of Starlink satellites. They have put orders of magnitude more satellites into orbit than even a decade ago, with even more expected. Those satellites spoil deep-space astronomical observations when they cross a telescope’s field of view. More importantly, they scatter and reflect sunlight from their solar arrays.

September – Coruscating

Coruscating, readers are told in a Guardian article, means sparkling or emitting flashes of light. It is derive from the Latin coruscāre, to flash or vibrate. Yet, it could also mean the same as excoriating, censuring severely, severely critical or scathing. The article then mentions that David Shariatmadari (?- ) in his book Don’t Believe a Word: The Surprising Truth About Language (2020): “A word’s origins do not reveal its underlying meanings.”

Elizabeth Closs Traugott (1939 – ) explains that the first meaning of toilet in English was a “piece of cloth, often used as a wrapper, especially of clothes”. It adopted several other meanings before taking on its current one.

Michael Proffitt, chief editor at the Oxford English Dictionary, shows this new usage of coruscating dates to at least to 1995. It was added to the Oxford Dictionary of English, in 2017.

October – Rizz

Rizz refers to a term used by Generation Z to describe someone’s ability to attract or seduce another person. Rizz probably comes from the middle of the word charisma. It can be used as a verb, as in to rizz up = chat someone up.

Younger generations continually create opportunities to own and define the language they use.

Thus, another term used by these people is situationship = an informal romantic or sexual relationship.

I find it interesting that the word comes from the middle of a larger word. In Norwegian, many words come from the end. For example, a car (or any vehicle) is referred to as a bil, from automobil.

November – Authenticity

On 2023-11-27, Merriam-Webster announced its word of the year, authentic. Editor Peter Sokolowski stated: “We see in 2023 a kind of crisis of authenticity. What we realize is that when we question authenticity, we value it even more. Can we trust whether a student wrote this paper? Can we trust whether a politician made this statement? We don’t always trust what we see anymore. We sometimes don’t believe our own eyes or our own ears. We are now recognizing that authenticity is a performance itself.”

Definitions include: not false or imitation: real, actual, exemplified in an authentic cockney accent; true to one’s own personality, spirit or character; worthy of acceptance or belief as conforming to or based on fact; made or done the same way as an original; and, conforming to an original so as to reproduce essential features.

December – Unabated

Abated, as it refers to fossil fuels, is generally understood as capturing emissions before they go into the atmosphere. Thus, unabated fossil fuels are those without interventions to substantially reduce greenhouse gas emissions. The key word here is substantially. Does it mean 75% or 90% or 99%?

The world has known about the damage caused by fossil fuels for a long time. The Intergovernmental Panel on Climate Change (IPCC) published its second assessment report in 1995. This affirmed the science of anthropogenic climate breakdown. At that point, the world was informed about what was happening.

United Nations Climate Change Conferences, held annually and generally referred to as the Conference of the Parties (COP).

The sixth IPCC report delivered in 2023-03 issued humanity a bleak final warning – the biosphere is on the brink of irrevocable damage.

Thus, it is incomprehensible that the COP28 president was Ahmed Al Jaber, who is also director general and chief executive officer (CEO) the United Arab Emirate’s (UAE) Abu Dhabi National Oil Company (ADNOC). He has stated that climate diplomacy should focus on phasing out emissions, not fossil fuels.

Thus, it is incomprehensible that the powers that be allow the CEO of an oil company to chair the 28th round of the COP climate talks, in Dubai, in the United Arab Emirates, in the hottest year on record, and with carbon emissions rising.

According to the United Nations Framework Convention on Climate Change (UNFCC), the COP host country should rotate between five regional areas: 1) Africa, 2) Asia-Pacific, 3) Eastern Europe, 4) Latin American and Caribbean, and 5) Western European and others.

It has now been decided that Baku in Azerbaijan will host COP 29. It is extremely concerning that a significant fossil fuel-producing nation will host the annual climate conference for the third consecutive time, following Egypt and the United Arab Emirates. Burning fossil fuels is one of the chief causes of the climate crisis,.

Dishonorable mention – Password Child

I don’t know how to break this to my children, but neither of their names have been used as passwords. The closest I have come is using the name of a fictional character from a book first read some decades ago for a disposable email address. Disposable? Yes, I believe I still have access to it. At a minimum I have its password recorded, but do not recall using it since 2006.

Cambridge, as in a quaint British university, states that password child is a humorous way of referring to a parent’s favourite child, supposedly because the parent will often use the name of that child as a computer password.

My son, Alasdair, visited a graveyard at Morar in Scotland, 5 km south of Mallaig, where Loch Morar empties into the sea. (Mallaig can be found on the map below, just south of Skye). Morar is currently home to 257 souls, the MacLellans lived there before South Uist in the Hebrides, before the Margaree Valley on Cape Breton Island, before Nanaimo on Vancouver Island, before Vangshylla, Inderøy = Inner Island, in Norway. Alasdair discovered that many of the people in the graveyard were MacLellans named Shelagh and Alasdair, spelled as we had chosen to spell their names.

Word of the Year 2023 – Vatnyk

ватник is how the word is written in both Russian and Ukrainian. The Ukrainian transliteration to English, vatnyk, has been chosen, over the more common Russian transliteration, vatnik. Vata in plural. The term refers to a steadfast, jingoistic follower of Russian government (Kremlin) propaganda. Jingoism is a violent, or at least threatening, form of nationalism.

The use of the word originates from an Internet meme first spread by Anton Chadskiy, using the pseudonym Jedem das Seine on VK in 2011. BK in Russian = VK in English refers to ВКонтакте (VKontakte = InContact), a Saint Petersburg based Russian online social media and social networking service. It was later used in Russia, Ukraine, then in other post-Soviet states. The name refers to a cartoon character with a black eye, who wears a padded cotton wool jacket.

During the cold war (1947 – 1991), tankie referred to members of communist parties in western countries, notably the United Kingdom, who followed the Kremlin line, agreeing with the crushing of revolts in Hungary (1956) and Czechoslovakia (1968) by Soviet tanks. It was used, especially, by Western Marxists who wanted to distance themselves from hardliners.

Vatnik emerged because tankie was seen as an outdated reference, too limited in its ability to insult people on the far left. Because Russia is no longer communist, but still an authoritarian aggressor, tankie lost its political effect. As a result, those previously referred to as tankies are now called vatnik/ vatna.

Supporters of the Russian government, have described vatnik as an ethnic slur, in Wikipedia, and on social media networks. Evidence does not support this position.

Norwegian word of the year – Dupes

According to Norwegian Broadcasting Corporation (NRK) journalist Ragnhild Laukholm Sandvik, dupes was the biggest shopping trend in 2023. A dupe (duplicate) is a fairly similar but much more affordable alternative to an expensive product.

In 2023, the number of Google searches for the word dupe has set a new record. In addition, more than a third of Norway’s population between 15 and 25 have bought dupes in the past year. Dupes is about making a good deal, but it requires an awareness of rapidly changing online trends. It also helps to make some smart discoveries, as well as being aware of what one can afford.

Final comment for 2023

In 2023, the big three languages I have studied with Duolingo are Ukrainian, Finnish and Gaelic. After visiting the Faero Islands and Iceland, I realized there was less of a need to continue any study of Icelandic, because it is doubtful that I would return there again. Previously, I have used Icelandic online.

I have also signed a Welsh petition that protested Duolingo no longer updating its Welsh course from the end of 2023-10. This petition calls for the First Minister of Wales, Mark Drakeford, to personally intervene with Luis von Ahn, the CEO of Duolingo, with the aim of saving the Welsh course. There are currently over 650k active learners of Welsh on Duolingo & over 2 million have learned some Welsh on the course.
The Welsh Government’s target of 1M people with B2 & better skills by 2050 will be negatively impacted by this. If this can happen to Welsh, it can happen to Gaelic! Except …

The National Centre for Gaelic Language and Culture, Sabhal Mòr Ostaig, has taken over development of the Gaelic language course for language app Duolingo.

Scottish Gaelic was added to the app in 2019, with the course originally being built by a team of volunteers including Skye-based architect Màrtainn Mac a’ Bhàillidh, who is also a member of Gaelic campaign group Misneachd = courage.

Mac a’ Bhàillidh will continue to lead the team working on the course now it has moved over to Sabhal Mòr Ostaig, which is based in Sleat on the Isle of Skye. Sleat is not shown on the map below, but it is a peninsula furthest south on the island.

Dr Gillian Munro, principal at Sabhal Mòr Ostaig, said the partnership with the app, which has attracted 1.1 million Gaelic learners from across the globe, is to align the language courses both organisations offer.

“The success of Scottish Gaelic on Duolingo demonstrates the growing demand to learn Gaelic both in Scotland and internationally, and we would like to pay tribute to the dedicated volunteers for developing such a great course – ceud mìle taing dhuibh [= a hundred thousand thanks],” she said.

Colin Watkins, UK country manager at Duolingo, added: “As the Scottish Gaelic course grew in popularity, it was important for us to find the right partner to continue its development. The fit with Sabhal Mòr Ostaig, the National Centre for the Gaelic Language and Culture, is perfect.

“We’re confident the course will continue to go from strength to strength under the direction of Sabhal Mòr Ostaig, who are taking the original development team on board to work on the course.”

I believe my McLellan paternal grandfather, Alexander (1869 – 1935) had Gaelic as his first language.

Posted on

Science Revolution

Often, when I talk to Norwegians, they are not concerned about a climate breakdown. They are looking forward to a warmer climate. Unfortunately, the expected heat will not be distributed equally, and Norway – dependent on the Gulf Stream for its relatively warm climate, may find that winters become colder, rather than hotter, as Greenland loses its ice sheet that in large part propels the global conveyor belt of ocean currents.

This post republishes a diagram showing recent increases in temperature and CO2, along with a letter from (more than) 1 447 scientists about their climate concerns.

Dear Reader,

We are a large and diverse group of scientists and academics writing to you from every continent. First, we were concerned. Then, we were alarmed. Now, we are terrified. World leaders have known about the dangers of the climate crisis for decades, but they are not acting accordingly. It is still possible to turn the tide – but we need you.

None of the climate disasters unfolding before our eyes were inevitable. In 1992, virtually all countries promised to avoid “dangerous anthropogenic interference with the climate system”. 27 global UN climate conferences (known as Conferences of the Parties, or COPs) later, carbon emissions are 60% higher than they were in 1992. Our political leaders are catastrophically failing us.

No country is taking action in line with a 1.5°C pathway, the temperature limit aspired to in the Paris Agreement. Some of the world’s richest and highest-emitting countries continue to approve new oil and gas fields, to subsidise fossil fuels with trillions of dollars every year, and to engage in destructive agricultural practices. Rich countries, which have contributed most to the climate crisis, pretend they have decades left to decarbonize, while poor countries bear the brunt of impacts without adequate compensation or help. Those who demand justice and accountability are increasingly being persecuted.

Continuing on this path will mean untold suffering. Large parts of our planet will become uninhabitable, creating hundreds of millions of refugees, unprecedented famines, and severe political conflicts.

We do not have to surrender to this future. But the window of opportunity to secure an alternative, livable future is rapidly closing. The task is enormous: the IPCC notes that “targeting a climate resilient, sustainable world involves fundamental changes to how society functions, including changes to underlying values, worldviews, ideologies, social structures, political and economic systems, and power relationships.”

These deep, structural changes can improve our quality of life. We have the prospect of less polluted environments, healthier food, and more time for the things that matter. Resources can be better distributed – both within countries and internationally – rather than accumulated by the few at the expense of the many.

The solutions are available. What is preventing adequate action is vested interests and entrenched power – institutions, corporations, and wealthy individuals who benefit from the destructive status quo. We need to rapidly phase out fossil fuels, yet COP28 is being chaired by the CEO of an oil company, illustrating the profound influence of this entrenched power.

Overcoming these vested interests requires a large-scale mobilisation of society. It has happened before: without strong social movements, there would be no civil rights, no women’s right to vote, no weekends, no holidays, nor much of the welfare that considerable parts of the world enjoy today. And it can happen again: citizens in the Netherlands recently forced their government to plan a phase-out of fossil fuel subsidies, while people in Ecuador prevented oil extraction in the Amazonian Yasuni National Park.

But we need you. Wherever you are, become a climate advocate or activist. Join or start groups pushing for policies that help secure a better future. Contact groups that are active where you are, find out when they meet and attend their meetings. Find out what kind of engagement suits you best and talk to friends, family, and colleagues to spread the word. If we are to create a livable future, climate action must move from being something that others do to something that we all do.

As scientists and academics, we believe it is now necessary to step up and engage in collective climate action. Like thousands of people around the world, many of us have been advocating and protesting for a better world in a variety of ways, including peaceful civil disobedience.

Join us.

Posted on

Data Centres in Wind Turbines

WindCORES is best described as a project, founded in 2018 and based in Germany, that operates data centres inside two wind turbines, making them almost completely carbon neutral. This means that previously unused space becomes usable, even valuable. These data centres are powered by the same wind turbines, while fiber optic cables provide internet connectivity.

The concept began about 2013, when WestfalenWIND realized the electricity grid was too weak to handle the electrical power being produced by its wind turbines during peak wind hours. This meant that power from windfarms was switched off due to grid security issues. WindCORES estimated that this unproduced/ undistributed electricity could power one-third of all German data centers

Wind power that never enters the grid is fed to servers located inside formerly empty, large concrete wind turbine towers. Each tower is typically 13 meters in diameter, and could potentially hold servers throughout most of their 150 meters height. On average 85-92% of the power needed to sustain such a data center comes directly from the host turbine. When there is no wind, electricity is obtained from other renewable sources, including solar farms and hydroelectric power plants, via the electricity grid. It is claimed that a typical German data center releases 430 grams of CO2 per kilowatt hour. WindCORES servers will release 10 grams.

Currently, windCORES has a fully operational data centre in a wind turbine in Paderborn, a city in eastern North Rhine-Westphalia, Germany. Initially, For IT, WestfalenWind IT and Green IT installed four fire-resistant IT safety cabinets, housing 62U server racks, with Fujitsu’s Primergy servers and Eternus storage units.

It has about 150 customers of varying size, co-located in the towers offering cloud solutions. Zattoo, is one of these. It is a carbon-neutral Swiss TV streaming platform with several million monthly. Zattoo joined windCORES in 2020, when it moved one of its six data centers into a wind turbine, 218 channels are encoded with windCORES . By the end of 2024, Zatoo plans to relocate more existing servers to the wind farm, making it Zattoo’s main data center location.

WindCORES has recently opened a larger, second location called WindCORES II at Windpark Huser Klee, a 50.85 MW onshore wind power project, also located in North Rhine-Westphalia, but at Lichtenau. The windfarm was commissioned in 2015. The data centre was built for BMW, occupying three levels (20 meters) of space.

Reflection

Some µs after I had typed in the title of this weblog post, I wondered if it should be changed to A in B. After all, the local bus company is called AtB, which in the local trøndersk dialect means A to B. Yes, this dialect specializes in shortening words, so they are barely understandable, even to other Norwegians. While A and B refer to random locations/ stops in the bus network, A refers to any type of product that can be made or stored in a container B, in the original example. More specifically, my reasoning was that readers could be asked to reflect on: What can be housed in a wind turbine mast? or, possibly: Where can data centres be located? In the end, I decided to take the easiest action and do nothing.

There is no reason why other companies in other places in the world could not open data centres in existing wind turbines, even in Trøndelag.

Posted on

Slide Scanners

The Plustek 8200 SE slide scanner kit. Image: Plustek

I am related to a historian, who is enthusiastic about transportation, especially trains and aircraft. Many years ago, he approached an octogenarian about borrowing some slides and other documentation, of transportation infrastructure from the 1950s. This person informed the historian that he had thrown out his slides, because he knew they were worthless, but had kept the slide frames, because he knew that they would be valuable. This event probably took place about 2010.

At the time, we had just purchased a slide scanner and had copied some of our 4 000 slides, taken over a period of about 30 years. This may not seem like a lot of photos, but in these ancient times, one had to pay for rolls of film, as well as for the development, not to mention the frames. Fortunately, those days are past. Today, even old phogies constantly use a hand-held device that functions not only as a camera, but as an audio and video recorder. The world moves forward, sweeping the older population along with it.

Just to make sure everyone is on the same page, the purpose of a slide scanner is to transform analogue format images, typically preserved on 35 mm slides, less often film negatives, into digital images. The pixel quality of a slide generally exceeds that of images taken with a contemporary smartphone.

Our first slide scanner, a Jobo SnapScan 9000, was able to scan analog 35mm slides and store the digital content on a SD card in the form of a 9 megapixel image. The manufacturer would have us believe that this resolution was sufficient, and that the scanning process was both Quick & Easy. It wasn’t. Because the scanner operated independently of a computer, users were forced to preview scanned image on an insufficiently small LCD screen. The entire process was a nightmare, that required the user to follow a complicated procedure. We found it necessary to have this written on paper.

This scanner is still available for purchase today, but if readers are contemplating the acquisition of a slide scanner, it is probably better to have one that connects directly to a computer. This will allow the scanned slide to be evaluated at a higher resolution. The images can be scanned as files in an appropriate image format, that can be saved in folders and subfolders that are organized as the user wants. This process is similar to how images are saved to a computer, when a smartphone is connected using a USB cable.

Thus on 2022-02-04, we acquired a new slide scanner, a Plustek OpticFilm 8200i SE, that can scan negatives and slides in about 113 seconds. Yes, you will need at least two minutes to process each slide, but to calculate time use, allow at least three minutes. That is, 20 slides in one hour. A project involving 4 000 slides will take 200 hours = probably many months.

The scanner has a built-in infrared channel to detect surface dust and scratches. This is very useful to remove defects without retouching images.

The resolution is 7200 x 7200 dpi (69 Megapixels) for 35mm negative film and mounted slides. Not all of this will be used because the image on slides is rectangular not square, 24 x 36 mm. The system allows for a 48-bit input, and a 24/48-bit output. In addition, there is up to 3.6 Dynamic Range Enhanced Multi-Exposure Function for improved image quality.

Software includes Plustek QuickScan and LaserSoft Imaging Silverfast SE Plus. Out of the box, these support Windows 7/ 8/ 10/ 11 (64-bit). Mac OS 10.7 ~ 14.x usesr can download drivers from the Plustek website. Linux users would find it better to install a dual boot system with Windows, or borrow a Windows computer.

This software provides multi-format output options: JPG, TIF, PCX and BMP. The SilverFast® SE Plus 8 software helps the cleaning and detailing of the scanned images. The machine was made in Taiwan.

Once slides have been converted, they can be manipulated digitally, just like any other digital image. Red eye issues, and other imperfections in the original image, can be corrected. One can crop them, make collages or introduce other fake elements, if that is desired. Different versions can be constructed for different purposes. Colour filters are often useful, to create monochrome or brightened variants. Enthusiastic users can undoubtedly find artificial intelligence (AI) options to fulfill their desires, but this will have to be done with software that is not part of the Plustek system.

While the slides themselves may be regarded as a backup, physical slides degrade over time. Digital files don’t, but have other issues. The use of a network attached storage (NAS) server, has been discussed previously. Regardless of whether a person uses that approach, or arranges backup in other ways, the 3-2-1 rule still applies: Keep at least three (3) copies, store two (2) backup copies on different machines/ types of storage media, with one (1) located off-site. If you have a good relationship with family or friends, offer to store a copy of their photos (and other important documents) while they store yours.

While some scanner manufacturers claim to automatically upload files to cloud-based storage services, this is not necessarily appropriate, for one never knows how they will be used, or how many others will be able to access them. If a cloud service is to be used, it should only be trusted with encrypted files.

Another benefit of scanning slides, is that it eliminates the need for yet another device – the slide projector. These can be difficult to find, and the situation will only get worse.

A slide scanner is not just useful for slides, it can be used to digitize negatives. These will be processed to reverse colours so that the result appears as if they were slides. As fewer and fewer people actually use photographic film, it is becoming increasingly more difficult (and expensive) to have images printed from negatives.

Beyond the Slide

A slide scanner will not help anyone wanting to preserve printed photos. For this the device to choose is a flatbed scanner. For most households, the quantity of photographs is so small that there is no need to invest in a more expensive sheet-fed scanner. These are also notorious for damaging photos when they are inserted into the device. Models with dust and scratch removal capabilities, only remove these defects from the digitized images, not from the originals.

Some flatbed scanners come with a film attachment, which allows slides and negatives to be scanned.

The scan area of a flatbed scanner is typically letter size = 8.5 x 11 inches = 216 mm x 279 mm used in North America or A4 = 210 x 297 mm = 8.27 x 11.69 inches, used in the rest of the world. There are also A3 = 297 x 420 mm scanners, and larger units but these are disproportionately much more expensive.

Images should be set against the top and one side edges of the flatbed. Glass should be cleaned to remove dust, and prevent damage to the original photo/ slide/ negative. Images should be scanned individually. Image quality, especially in terms of its relative lightness or darkness can be examined using the histogram feature on the scanner preview screen. A scanner is just a camera, by another name. An 8-bit mode image gives 256 discrete brightness levels between absolute black (0) and absolute white (255). Traditional (but now antiquated) light meters used with 35 mm, and other cameras, typically measured 18% gray, the mid-point between black and white = 128. This encouraged photographers to expose at the mid-point, to take advantage of the camera’s dynamic range. More extreme exposure, will limit the device in its ability to record the image.

The histogram, a prominent tool for photography and digital image processing, is a graph that displays brightness levels from the darkest to the lightest, arrayed across the bottom from left (darkest) to right (lightest). The vertical axis (height) shows the relative proportion of the image that can be found at any particular lightness level.

Scanners (and many cameras) have a range of about 5 f-stops, where each f-stop is a doubling or halving of the amount of light hitting the sensor. Some photographers eliminate the top and bottom three values, then divide the remainder into five zones 50 levels wide, that they label  very dark/ dark/ medium/ light/ very light. This accounts for 3 + 5 x 50 + 3 = 256 levels. In contrast, the human eye, is capable of discerning the world in about 10 f-stops of light.

Archival copies of images should be saved in PNG = Portable Network Graphics format. Wikipedia lists the following reasons for using this format: portability, with software and hardware platform independence; completeness, allowing truecolor, indexed-color, and greyscale images; an ability to code and decode in series; progressive presentation, that allows for an initially image approximation of the entire image that is progressively enhanced; transmission error detection; losslessness, all information is preserved; efficiency; efficient and consistent compression; easy implementation; interchangeability, with any PNG decoder capable of reading all PNG data streams; flexibility, allowing future extensions and private additions without affecting the previous point; and, freedom from legal restrictions, the algorithms used are free and accessible.

Log images as they are digitized, and develop an appropriate filing system. This can save time, used with unnecessary re-scanning. Scan everything and keep it. Digital storage space is cheap. The Backup 3-2-1 rule states: Make 3 copies of everything you care about. Use 2 different storage formats. Keep 1 copy off-site.

It should be noted that many Apple and Adobe products deliberately make working with PNG difficult. Resulting files are larger than necessary, because these companies have a vested interest in other formats, such as TIFF = Tiled Image File Format.

A New Computer

Some people like to make their life complex. There was a time when one could say that there were two types of people: those who use Apple products, and those who use Windows. This was obviously before Android and Chromebook. Having a Commodore Amiga as a first computer in the mid 1980s, has made dualism a non issue. We have owned Apple products, including iPhones and Macbooks. We have used Windows machines at work and privately. We have owned a Chromebook. Yet, Linux is our go-to operating system.

Unfortunately, Linux does not work effectively with a Plustek OpticFilm 8200i SE, or its SilverFast SE 8 software. One approach for Linux users is to transform an older machines into a dedicated Windows machine, but with Winaero Tweaker installed, to make it livable. Advice to others: If Windows 7 or an even earlier version is to be used, keep it offline.

What to do after scanning

A person with a slide scanner, and experience in copying their own slides, is a person with a valuable resource, especially for older people who have not made an effective transition from analogue to digital. Volunteering to help others, can begin by letting others know you have equipment and skills available.

Once slides have been digitized, more work can be done if the resulting images are considered digital assets. This topic will be taken up in a future post, partially written but with an unscheduled publication date, titled Digital Asset Management. Part of this post will also deal in greater detail with volunteering, helping others to digitize their slides, and helping people to share them.

This post has had a long development. It was originally written 2021-05-30, but modified 2022-04-15 when new content was added. It was updated once again, starting on 2023-11-09.

Posted on

LUVLY 0

Sometimes a single letter changes the meaning of a word. A quadracycle (with an a in the middle) describes a small, human-powered, four wheel vehicle. In contrast, a quadricycle (with an i in the middle) is a small, motorized four wheel vehicle. This word with an i is the topic of this weblog post. A quadricycle was officially defined by the European Union in 1992, and refined and divided into two official types, in 2006: Light = L6e whose unladen mass < = 425 kg, not including the mass of the batteries in case of electric vehicles, with a maximum design speed < = 45 km/h, and a maximum power < = 6 kW; and, Heavy = L7e whose unladen mass excluding batteries < = 450 kg for passenger vehicles or < = 600 kg for freight vehicles, with a maximum design speed < = 90 km/h, and a maximum power < = 15 kW. Other rules also apply. In other parts of the world, especially North America, the term microcar is used instead of quadricycle.

The driving age limit for these vehicles varies with the jurisdiction. L6e can be driven in France by someone who is 14. In Finland the age limit is 15, but in general in Europe it is 16. For many secondary school students, a L6e quadricycle has replaced the bicycle, moped and/ or bus, for transport to school and leisure activities. For L7e vehicles, the general minimum age to drive is 18.

Yet, quadricycles can be dangerous. Locally, two girls (15 and 16 years old) were killed in Steinkjer 2023-07-13 when their L6e vehicle collided with a conventional passenger car at a hilltop with limited vision, on county road 6982.

Driving behind a quadricycle can be a frustrating experience. They are difficult to pass at the best of times on Norwegian roads. There are few places where they can pull in to allow other vehicles to pass, and some drivers of them have no intention of making it easier for others to pass them.

The name quadricycle is derived from Henry Ford’s (1863 – 1947) first vehicle design, the Quadricycle, made from 1896 – 1901. It ran on four bicycle wheels, with a mid-mounted engine using chains to drive the rear wheels. It had a maximum speed of 32 km/h. Various vehicles were handbuilt, until production of the model ceased.

Henry Ford sits in his first automobile, the Ford Quadricycle, in 1896. Photo: Newsweek

LUVLY

LUVLY, the company, was founded in 2015 in Stockholm, Sweden. Unfortunately, I have not been able to find out what they have been doing between then and now. Surely, it doesn’t take eight years to design a quadricycle L7e, even one with innovative design and production features?

The company’s electric vehicle (EV), is the LUVLY 0. It has been designed to be small and light, in two different ways. First, to reduce shipping costs and emissions, by shipping what amounts to a flatpack of 20 vehicles in a single container, ready to assemble in an assembly plant at various locations throughout the world, particularly in Europe. Second, in terms of the assembled vehicle. It is light because it lacks features that others would regard as fundamental. Think fenders or a rear window or a dashboard or air bags or charging technology.

Instead of providing a screen to provide information to drivers, LUVLY relies on the driver coming equipped with a smartphone, to be used with the LUVLY app.

According to press reports, The LUVLY O quadricycle will be launched in 2023, in Stockholm, Paris and Madrid. There aren’t many days left for that to happen! LUV stands for light urban vehicle. It is 2.7 m long, 1.5 m wide, and 1.4 m tall. It has a curb weight of 380 kg. Its 6.4 kWh battery pack, it has a maximum range of 100 km, which is adequate for most commuting, but not much else.

It has a top speed of 90 km/h. Currently, that speed is the maximum allowed on any of the roads we commonly take in Norway. Other places, including a future Trøndelag, when the E6 highway is modernize, allow 110 km/h.

It comes with two portable batteries that weigh 15 kg each, and plug into ordinary wall sockets for charging. They cannot be charged using conventional EV chargers. This may be fine at a workplace or house, but I wonder what happens if one runs low on electricity at a shopping mall?

Quadricycles are not subject to the same safety rules as conventional cars, including EVs. Thus, they are not required to be physically crash tested or to have airbags installed.

Euro NCAP’s first tests in 2014 on heavy (L7e) quadricycles showed major shortcomings in safety. The organisation called for more realistic requirements from the regulators and for quadricycle manufacturers to take more responsibility for the safety of their products.  Quadricycles still lack basic safety features found on small cars. Legislators fail to challenge manufacturers to do more and give a false impression to consumers that these vehicles are fit for purpose. They are not.

The LUVLY O has been crash tested using computer simulations. Having studied computer simulation, I admire this approach. Unfortunately, crashing vehicles gives insights that simulations cannot match.

I am intrigued by LUVLY’s unconventional approaches to manufacturing. Flat panels and connectors are used to construct strong, three-dimensional sandwich composite structures resulting in a strong but light chassis.

Currently, LUVLY claims its approach to manufacturing is unique. It may be suitable to have a factory for manufacturing components in one location in the world, and numerous assembly facilities elsewhere, but this approach to production may not be cost effective. LUVLY admits there won’t be a large rollout immediately. I am skeptical that they will be able to transfer this technology to others.

Most vehicles have production runs that number in thousands of vehicles, as a minimum. Exceptions exist. It may be possible to produce limited editions of exotic vehicles, but producing limited editions of an ultra-basic quadricycle in not one of them.

LUVLY will probably never be major manufacturer of vehicles, but may end up as a minor producer. There is a market for niche products. There may be a market for minimalist commuter vehicles and delivery vans. I am not totally convinced that a sports car will be viable.

Vehicles have to be appropriate for the roadways on which they are used, as well as the people using them. At this moment, there is insufficient data to either confirm or deny the safety characteristics of a LUVLY 0. It could well be a suitable city car if used at low speeds, in some environments. It is more difficult to imagine its use in more rural environments, where it could meet large vehicles travelling at high speeds on convoluted roads. While younger drivers have quicker reactions than older drivers with more sluggish movements, I would not encourage anyone (young or old) to drive a LUVLY 0 or any other quadricycle, until adequate safety equipment is in place.

A Mobilize Duo, a quadricycle with three seats and an airbag, made by Renault, and available on a subscription basis.

The most popular EV among the members of my amateur radio group, is a Mitsubishi I-Miev. As a used vehicle it is cheap to buy and to run. More importantly, it has passenger car safety features, even if these are not top of the class. These are used almost exclusively as commuter vehicles. Another choice is the Renault Twizy, which has just stopped production 2023-09. It is a two-seater quadricycle that is equipped with an airbag. Its replacement, the Mobilize Duo quadricycle comes with three seats and an airbag. It can be configured as an L6e vehicle with a top speed of 45 km/h, or an L7e vehicle with a top speed of 80 km/h. This is made by Renault, but is only available on a subscription basis.

Note: Once again, I would like to thank Don Wong for bringing the LUVLY 0 to my attention. Thanks, Don!

Posted on

Electricity: ACER and more

The energy price zones in the Nordic Countries. Norway distinguishes itself by having five zones with a population of 5.5 M. Denmark with 5.9 M has two. Finland with 5.5 M and Sweden with 10.6 M just have one, each.

Electricity for me has always meant hydroelectric power. Wikipedia tells us: In 1878, the world’s first hydroelectric power scheme was developed at Cragside in Northumberland, England, by William Armstrong. It was used to power a single arc lamp in his art gallery. The old Schoelkopf Power Station No. 1, US, near Niagara Falls, began to produce electricity in 1881. The first Edison hydroelectric power station, the Vulcan Street Plant, began operating September 30, 1882, in Appleton, Wisconsin, with an output of about 12.5 kilowatts. By 1886 there were 45 hydroelectric power stations in the United States and Canada; and by 1889 there were 200 in the United States alone.

In 1895 the Norwegian government purchased its first waterfall, Paulenfossen, to produce electricity for the Setesdalsbanen railway line. These are both located in the south of Norway, close to Kristiansand. In the early 20th century, the government purchased the rights to many more waterfalls to produce electricity for industrial use. In 1921, the Norwegian Water Resources and Energy Directorate (NVE) was setup to construct and operate state-owned power plants.

Over the next 70 years, a vast number of small, medium and large-scale hydropower installations were built. Svartisen power plant in Nordland, opened in 1993. It was the last major plant build. Today, Norway has about 1 200 hydroelectric generating stations.

This weblog post looks at the Norwegian electrical energy/ power market, after the start of the war in Ukrainian. The European electrical energy market has been disrupted since the Russian invasion of Ukraine in 2022. It has affected countries differently. Here, the challenges facing Norway will be discussed. There are many different ways to look at this situation, many aligned with that individual’s role. Most people are consumers. For them, the root of the problem is the Norwegian government’s failure to impose a maximum price. Then there are investors, who use an artificially constructed market to profit from a war induced shortage of energy. In addition, the Norwegian government, as a major investor, has failed to tax these windfall profits. Instead, they use general taxation (and their own massive energy windfall profits) to subsidize some consumers, while ignoring other equally worthy groups.

ACER = Agency for the Cooperation of Energy Regulators, can be regarded as the European Union’s energy agency. Its intention is to ensure the free flow of electricity across national borders to smooth out variations in wind and solar power. It is particularly concerned about solar power which has a diurnal rhythm. Wind energy is more varied but also has a diurnal component that partially compensates solar energy. In contrast to this, hydroelectricity in Northern regions, has an annual cycle. Norway produces around 140 terawatt hours (TWh) with hydropower. In a year with normal rainfall, there is a power surplus of around 10 per cent, that is approximately 14 TWh. For Norway with hydropower, the Acer agreement does not work well.

To explain the relatively high Norwegian prices for electricity, the Norwegian government refers to the energy crisis in Europe and the war in Ukraine as an explanation for these prices. In 2020, long before the gas crisis, electricity customers in Denmark and Germany paid around NOK 3 per kilowatt hour, about six times the price in Norway. Electrical consumers have traditionally paid a lot less, because Norway built out an inexpensive hydroelectric power system. After the elimination of gas from Russia by unknown forces, possibly associated with Ukraine, they pay around NOK 4.

The water reservoirs in Norway have a natural cycle. In the spring before the snow melts, they are almost empty. During the summer, they are filled up so that they can provide electricity through the winter. There is a shortage of water in the reservoirs towards the end of winter.

The Acer agreement does not take this cycle into account. Instead, all the water Norway has in its reservoirs is seen as available power for Europe. The agreement does not take into account that the reservoirs must be filled before winter.

In contrast, if there is a lot of wind in one place, the local electricity price goes down and the electricity will then flow freely to areas with little wind and higher electricity prices.

With Acer, it is differences in electricity prices that determine where the electricity will flow, not a “desire” to import or sell. As long as the electricity price is slightly lower in Norway than in England and the EU, electricity flows out of Norway. For electrical exports to stop, the price must be the same on both sides of the cable.

For the last several years, Norway has exported significantly more than it electrical power surplus. The Norwegian government along with its control organization, NVE, a directorate under the Ministry of Petroleum and Energy, and its energy distributor blame low rainfall to explain the low degree of filling.

An awkward government and Statnett stand passively and watch power flow out of Norway at the same time as the reservoirs in southern Norway have a historically low level of filling. Statnett argues that the power cables used for export can also be used for import. In this way, delivery security is ensured. What they don’t want to discuss is if the price level will be significantly higher.

With the last two foreign cables, the export capacity from southern Norway was well over double the power surplus.

With new cables, Acer, the free flow of electricity, supply and demand in Norway no longer determines the price of electricity. Instead, it is determined in the EU and England, for the whole of southern Norway (NO1, NO2 and NO5). Central Norway (NO3) and Northern Norway (NO5) were initially shielded from European price levels, but this is gradually changing. A planned increase in transmission capacity between north and south will only contribute to higher prices in the north without lowering the price in the south.

More electricity to the south means more exports until the reservoirs in the north are also depleted and we get the same situation in the north as in the south.

Most Norwegians are willing to contribute electricity to Europe. However, the amount of power to be exported has to be determined by the Norwegian power surplus. The result of this export is an increasingly lower degree of filling in the water reservoirs. At some point, this draining of the magazines must stop.

Electricity prices in Europe will reach new heights in the winter and we will be forced to pay even higher electricity prices in Norway to get electricity back.

In a worst case situation, Norway will not have enough water in the reservoirs to get it through the winter. If that happens, the overseas cables do not have enough capacity to supply Norway with electricity, and one will end up with electricity rationing.

The Norwegian government is currently providing support mechanisms for consumers. It is perpetually investigating imposing maximum prices. Competition rules in the EU prevent electricity support mechanisms for business, although some exceptions have been made, especially for farmers. The result has been the elimination of power-intensive industry in the south of Norway.

The government says that investing in offshore wind and more renewable power will contribute to lower electricity prices. The development of more renewable electricity, in the form of wind or solar, in Norway is only intended to cover its own increased consumption. Norway will never have a power surplus corresponding to the transmission capacity of 35 TWh, which is what is needed for the market in southern Norway.

The EU has a colossal need for more renewable electricity in the coming years. Currently, only 10 percent of the EU’s energy needs are covered by renewable energy.

With the demand for a 50 percent CO₂ cut in the Paris Agreement, there is no reason to hope for lower electricity prices in the EU in the next 10 years. At the same time, there is no reasonable reason why southern Norway should have sky-high electricity prices. Most Norwegians are agreed that if lower electricity prices are to prevail in Norway, along with a stable power situation, the Acer agreement must be renegotiated or terminated.

Norway has voted twice against joining the EU, once in 1972 and then again in 1994.

Opposition to Norwegian membership in the EU is still strong, according to a survey carried out by the Norwegian Broadcasting Corporation (NRK) in 2023-03. This indicated that if a referendum was held then, 52% of those who responded said they would vote against membership of the European block. Only 27% would vote yes, while more of the rest said they most likely wouldn’t participate in a new referendum.  Most Norwegians do not wish to cede sovereignty to the EU.

Norway is still integrated into Europe through its European Economic Area Agreement membership, which gives it access to the EU internal market. Norwegians have a general skepticism not just to big business, but to their own government!

Overseas cables are then used for power exchange and the sale of excess power without giving us European price levels. Just as Statnett promised us before the cables were put into operation.

Norway’s power surplus and net exports over time will be roughly the same without Acer, and Statnett will still receive income from sales abroad. Norway can still help fulfill the intention of the Acer agreement, that is to say help to smooth out variations in wind power. If it is very windy in England or the EU, we can accept excess wind power and at the same time reduce our own power production. It is very easy to turn off hydroelectric turbines. When there is little wind, we can give back the same amount of electricity. The whole exercise becomes a zero-sum game, profiting all participants.

In Norway the population is skeptical to politicians. Politicians of all colours are seen as aligning themselves with foreign investors to prey upon the weak. In this Norway is not unique.

Prices

Most Norwegian consumers opt for spot prices. We choose a fixed price. If one looks at our electricity bill in 2021, the energy component of 1 kW of electricity cost about NOK 0.20, while the infrastructure component was about NOK 0.30. Altogether, slightly over NOK 0.50. In 2022, the infrastructure component was changed to take into account the maximum amount of electricity consumed. It was not directly comparable with the situation in 2021. With the War in Ukraine, and the difficulties faced by people in Continental Europe to access Russian gas, the energy component of electricity prices escalated, for those using spot prices. The government provided consumers with support which amounted to 80% (in summer) or 90% (in winter) of the amount that exceeded NOK 0.70 per kW/h.

Because of our fixed price agreement, we were spared price increases for most of 2022. On 2022-12-01, a new fixed price agreement took effect. Before the infrastructure component, and subsidies, the energy component of 1 kWh of electricity now cost NOK 1.00, five times the price the year before.

A year later, on 2023-11-07, Trish received her next annual SMS from our electrical company. They wanted to know if we wanted to renew our fixed price contract for another year, with a kWh price of NOK 1.0015, or go over to a spot price, they claimed was currently at NOK 0.42.

She replied to the SMS with a positive answer. There are two reasons for this. First, we don’t want to worry about choosing the correct hour to use electricity. Second, we are uncertain if the relatively cheap prices will continue. Some hours after answering, NRK, the Norwegian Broadcasting Corporation, could tell us that the spot prices in our region on that same date, were not NOK 0.42, but NOK 1.14 at their lowest at 02:00 in the morning, but had increased to NOK 2.77 by 18:00. They then fell to NOK 1.71 at 22:00.

Reflection

As I write this ragged post, I read in 2023-07 the world has never been hotter for 120 000 years = 3.786912 Ts for SI addicts, or a very long time for the rest of us. Industrialization forced the world into a dependence on fossil fuels, coal initially then petroleum. Overcoming this dependency has not been easy. Nuclear power has been one proposed answer, but its waste products put demands on future generations that last thousands of years. Hydrogen has been proposed as an energy bearer, but its use increases energy consumption.

Each form of sustainable energy has its own individual challenges. Communities can choose their poison based on what is best for them. Among the choices are solar, wind, hydro and geothermal, or some combination.

In Europe, with a war waging in Ukraine, and the region still dependent on fossil fuels, there are countries, companies and individuals seeking profit maximization. Governments, possibly out of a fear of losing access to this energy, are unwilling to tax war profiteering. Indeed, one sees that they are in the pockets of international investors.

In democracies, as well as more autocratic countries, politics has become a career choice. This is wrong. I have nothing against a person working as a politician for, say, four/ five years. However, at the end of that time, they should return to other forms of earning a livelihood, and be quarantined from further political activity for at least twice the length of their political period. Just as there is a minimum age to vote, or be elected to office, there should be some maximum age. A start age of about 20, and an end age of about 65 would allow the most enthusiastic people to work as politicians for about 15 years, and in other occupations for a further 30.

In much the same way that there should be minimum wages, that should mirror living wages, it would be useful for the world to set a maximum income.

Reddy Kilowatt Update

Reddy Kilowatt

Art Vaughan wrote: “The hydro plant in Appleton has been one of the things the city fathers … and mothers? … have long trumpeted. However, when I was in the fourth grade or so my class went through the “modern” hydro plant in Appleton. Much more impressive and I still have the Reddy Kilowatt pin they gave us!”

Reddy Kilowatt (see above) is drawn as a stick figure whose body, limbs, and hair are made of stylized lightning-bolts and whose bulbous head has a light bulb for a nose and wall outlets for ears. It was devised by Ashton Budd Collins Sr. (1885 – 1976), and first used in an advertisement for the Alabama Power Company on 1926-03-14. It was used as a spokesperson for electrical generation in the United States (and elsewhere, such as Canada) from 1926 to 1999, although usage started to sag in the 1980s.

Posted on

Beta Technologies

Beta ALIA-250 prototype eVTOL aircraft. Photo: Brian Jenkins, 2021-08-23

This weblog post is about Beta Technologies, and especially its partnerships with companies in California and British Columbia.

Beta Technologies is a aerospace manufacturer based in Burlington, Vermont. Since its founding in 2017, it has been developing electric vertical take off and landing (eVTOL) as well as electric conventional take-off and landing (eCTOL) aircraft for the cargo, medical passenger, and military aviation applications. It has also developed a network of chargers which can supply power to aircraft. Training programs for future electric aircraft pilots and maintainers are also provided.

This weblog has covered electric aircraft previously including the ePlane, the Eviation Alice, the eCaravan, Heart Aerospace ES-19 in addition to draft content about other aircraft has been written, but not yet published. I am not surprised that established airplane manufacturers are not at the forefront of electric aviation. This is actually expected according to Clayton Christensen (1952 – 2020). He introduced disruption as an business concept in The Innovator’s Dilemma (1997). Steam shovel manufacturers went bankrupt, while their former market was won over by upstart innovators making hydraulic excavators. Battery based transportation has emerged for land based vehicles, ferries and other ship based transport, as well as aviation.

General Motors may have started the 21st century revitalization of the electric vehicle, with their EV1 in 1996 – 1999, but ended up crushing almost all of the 1 117 EVs produced. An estimated 40 survived, with deactivated powertrains. They claimed the EV was dead.

Tesla Motors was founded 2003-07 by Martin Eberhard and Marc Tarpenning, as a tribute to inventor and electrical engineer Nikola Tesla. In 2004-02, Elon Musk became the company’s largest shareholder with a $6.5 million investment. He became CEO in 2008. Tesla’s announced mission is to create products which help accelerate the world’s transition to sustainable energy. The company began production of its first car model, the Roadster sports car, in 2008.

Tesla Superchargers are a major reason why the brand has become so dominant. A reliable, fast and accessible charging infrastructure has shown itself to be of critical importance in the adoption of EVs. The Tesla charger, known as NACS = North American Charging Standard, developed by Tesla has been used on all North American market Tesla vehicles since 2012 and was opened for use by other manufacturers in 2022.

Beta’s ALIA electric conventional takeoff and landing (eCTOL) aircraft completed a flight milestone of its own in 2023-10, traveling 1 700 nautical miles = 3060 km = from Vermont, across 12 states to Duke Field, a subsidiary of Eglin Air Force Base, in Florida, where the US Air Force is now validating the aircraft for vital use capabilities including critical resupply, cargo deliveries and personnel transport.

The General Aviation Manufacturers Association (GAMA) published a report in 2023-09 titled Interoperability of Electric Charging Infrastructure. This report concluded that shared charging infrastructure offers numerous benefits, in contrast to OEMs developing multiple proprietary protocols.

Beta Technologies has focused on building out an aviation charging network, not only for its own aircraft, but for the entire aviation sector by using an existing standard. Beta has been in developing electric aircraft charging technology since its founding, in anticipation of a new widespread mobility segment. It has 14 charging stations online in the US, with 55 additional sites already in development or under construction.

Archer Aviation’s autonomous, two-seater demonstrator aircraft completed its first hover test on 2021-12-16. Photo: Archer Aviation

Meanwhile, in San Jose, California, Archer Aviation has been developing its own eVTOL aircraft. Archer is a publicly traded company. They have entered into a collaboration, where Archer intends to implement BETA’s electric aircraft charging technology to support its own eVTOL aircraft.

Geography may have been one reason why Beta and Archer found each other. Beta’s charging infrastructure is on the American east coast, while Archer is a west coast entity. Archer will begin by implement two of Beta’s Charge Cube systems at its test facilities in California. It will also deploy multiple Mini Cube mobile chargers. This could become the basis for aviation charging, much as NACS has become the de facto standard for land based EVs.

BETA Technologies’ Charge Cube system. Photo: Business Wire

Archer’s focus is on eVTOL aircraft is to offer an aerial ridesharing service, also referred to as Urban Air Mobility (UAM). They are planned to transport people in and around cities in an air taxi service and are claimed to have a range of up to 160 km at speeds of up to 240 km/h. United Airlines is its first major corporate partner, having ordered two hundred Archer electric aircraft.

Helijet

This Weblog post began because Don Wong sent me a link to an article about Helijet International.

Helijet International is a Richmond, British Columbia based helicopter airline and charter service. Scheduled passenger helicopter services operate flights between heliports at Vancouver International Airport (YVR), downtown Vancouver ( on a floating structure, adjacent to Waterfront Station on Burrard Inlet), downtown Nanaimo at the Cruise Ship Welcome Centre, and downtown Victoria. Helijet also has facilities at Seal Cove (CBF6) in Prince Rupert, and at Sandspit Airport (YZP) and Masset Airport (ZMT) both on Haida Gwai = an island group previously known as the Queen Charlotte Islands.

Helijet Charters serves the film, television, aerial tour, industrial and general charter markets. It is also British Columbia’s largest air medical service provider.

The Helijet fleet currently consists of 3 medevac equipped Aérospatiale AS350 helicopters, 15 Sikorsky S-76 12 passenger helicopters, and a Learjet 31 fixed wing aircraft.

Don’s link said that Helijet would work with Beta to build a five-passenger plus pilot Alia eVTOL aircraft for traveller and commercial transportation, to be used in southwestern B.C. and the Pacific Northwest region. A publicity event to announce this was held on 2023-10-31 at Helijet’s Victoria Harbour Heliport, attended by Skye Carapetyan, sales director of Beta, British Columbia Premier David Eby, and Danny Sitnam, CEO of Helijet.

According to the announcement, the aircraft are currently in advanced flight standards development toward commercial regulatory certification in 2026. These aircraft are quieter, cost less, and are more sustainable for air transportation. However, eVTOL aircraft are not identical with helicopters. This means that the ground and building infrastructure at existing heleports will have to be updated to vertiport standards, which includes integrating zero-emission capabilities, and vertical lift technologies.

The electric aircraft’s vertical take-off and landing ability will also improve emergency response, air ambulance and organ transfer services in the British Columbia, especially the Lower Mainland. It will helping rural/ remote communities gain access to affordable and convenient air services.

Eby commented that the provincial government recognizes the potential of advanced air mobility to decarbonize the aviation sector, improve regional connectivity, improve emergency response times and introduce new manufacturing opportunities.

Posted on

Electricity

A pigeon. Photo: Viktor Forgacs, 2017-12-12

This post was originally called Digital Power Transmission. It began with content about the use of artificial intelligence (AI) to find faults in electrical power assets in Kansas and Missouri. That introduction became ancient history on 2023-10-26, when I read an article about pigeons using the same approach as AI to problem solving. I wondered if pigeons would make AI more understandable.

So, now this post begins with a scientific study of pigeons!

Pigeons

Columba livia domestica, has been found in records that are 5 000 years old. Its domestication is far older, possibly stretching back 10 000 years. Among pigeons that are bred specifically for particular attributes, homing pigeons are bred for navigation and speed.

Pigeons are able to acquire orthographic processing skills = the use of visually represented words/ symbols, and basic numerical skills equivalent to those shown in primates.

In Project Sea Hunt, a US coast guard search and rescue project in the 1970s/1980s, pigeons were shown to be more effective than humans in spotting shipwreck victims at sea.

A study was undertaken at the University of Iowa, by Brandon Turner, lead author, a professor of psychology, and Edward Wasserman, co-author and a professor of experimental psychology. 24 pigeons were given a variety of visual tasks, some of which they learned to categorize in a matter of days, and others in a matter of weeks. The researchers found evidence that the mechanism pigeons use to make correct choices is similar to that AI models use to make predictions. Using AI-speak, nature has created an algorithm that is highly effective in learning very challenging tasks, not necessarily fast, but with consistency.

On a screen, pigeons were shown different stimuli, like lines of different width, placement and orientation, as well as sectioned and concentric rings. Each bird had to peck a button on the right or left to decide which category they belonged to. If they got it correct, they got a food pellet; if they got it wrong, they got nothing.

Pigeons learn through trial and error. With simple tasks, pigeons improved their ability to make right choices from 55% to 95% of the time. With more complex challenges, accuracy increased from 55% to 68%.

In an AI model, the main goal is to recognize patterns and make decisions. Pigeons do the same. Learning from the consequences of being given a food pellet (or not), they show a remarkable ability to correct their errors. Similarity function is also at play for pigeons, by using their ability to find resemblance between two objects.

Those two mechanisms alone, can be used to define a neural network = an AI-machine that solves categorization problems.

The area served by Evergy, a Topeka, Kansas based electric utility company.

Back to the original content, Digital Power Transmission

Now, this post will examine the use of AI, and other digital technologies, in electrical energy transmission. Sometimes one has to venture outside of one’s backyard, to gain new insights. Today, the focus is on the Kansas and Missouri. More than four percent of this blog’s readers have roots in Kansas, in Leavenworth and Riley counties, making it one of the “big six” American states. The others being (in alphabetical order) Arizona, California, Michigan, New Hampshire and Washington. Yes, this weblog does have American content, because – sometimes – Americans are at the forefront.

Much of the initial work into the use of AI in grid management was done by Argonne National Laboratory, of Lemont, Illinois. After conducting AI grid studies, they stated that: “In a region with 1 000 electric power assets, such as generators and transformers, an outage of just three assets can produce nearly a billion scenarios of potential failure.” The calculation actually being: 1 000 x 999 x 998 = 997 002 000, which is close enough to a billion, for most people.

The Norwegian company, eSmart Systems, with its headquarters in Halden, bordering Sweden, in south-eastern Norway, provides AI based solutions for the inspection and maintenance of critical infrastructure related to electrical power generation and distribution.

Note: the term, asset, as used here, generally refers to a large structure, such as a electrical power generating station, or a substation, that transforms voltages (and amperages). For me, an asset will always be an accounting term, associated with the credit (left) side of a balance sheet, in contrast to a liability on the debit (right) side. My preferred terminology would be structure, works or plant.

eSmart

In this project eSmart will act as project management lead alongside engineering consultants EDM International, Inc. of Fort Collins, Colorado and GeoDigital, of Sandy Springs – near Atlanta – Georgia. Together, these will provide large-scale data acquisition and high-resolution image processing.

eSmart Systems is working with Evergy, a Topeka, Kansas based electric utility company that serves more than 1.6 million customers in Kansas and Missouri, to digitize Evergy’s power transmission system. It is also working with Xcel Energy, based in Minneapolis, Minnesota, and an unnamed “major public utility in the Southeast” of the United States.

Grid Vision tracks the performance of ongoing inspection work, provides instant insight of the location and severity of verified high-priority defects, and provides utility managers and analysts a deep and flexible framework for further asset intelligence.

The three-and-a-half-year-long Evergy project will improve reliability and resiliency of over 14 000 km of Evergy’s power transmission system by using Grid Vision to create a digital inventory of its assets, accelerating image analysis capabilities, and improving inspection accuracy by using AI combined with virtual inspections. The expected result is a significant cost reduction for inspections, maintenance and repairs.

There is a need for a dynamic energy infrastructure to ensure efficient, safe and reliable operations. AI, and especially machine learning, are increasingly used as tools to improve the reliability of high-voltage transmission lines. In particular, they can allow a grid to transition away from fossil and nuclear sources to more variable sources, such as solar and wind. This will become increasingly more important for several reasons. Extreme weather will offer increasingly more challenging operations, and the grid will have to support an increasing number of electric vehicles.

The vast number of choices means that random choices cannot be relied upon to provide results when facing multiple failures. Some form of intelligence is needed, human or machine, real or artificial, if problems are to be resolved quickly.

Wind and solar generation

Kansas state senator Mike Thompson (R-Shawnee), is a former meteorologist, who is currently chair of the Kansas Senate Utilities Committee. He has introduced bill SB 279, “Establishing the wind generation permit and property protection act and imposing certain requirements on the siting of wind turbines.” This bill would require wind and solar farms to be built on land zoned for industrial use. The problem with this proposal is that half of Kansas’ 105 counties are unzoned. These counties that want wind or solar energy would have to be zoned as industrial.

The Annual Economic Impacts of Kansas Wind Energy Report 2020, reports that wind energy is the least expensive energy source, providing 22 000 jobs (directly and indirectly). After Iowa, Kansas ranks second in the US for wind power, contributing 44% of Kansas’s electricity net generation.

Typically, there are two reasons for objections to wind and solar power. First, some people have an economic connection with fossil fuels. Second, and especially for wind, they don’t like their visual and aural impact on the environment.

Another source of conflict is aboriginal rights. This topic will be covered in an upcoming but unscheduled post, Environmental Racism.