Brock – Page 20 – Brock at Cliff Cottage

2021-12-042021-12-04

Forth

Forth is not a mainstream programming language. Whenever it is compared to something, the most operative word is different. It is almost like assembly language, which is how a machine would interpret code, if it used English, rather than 0s and 1s to calculate and communicate. Some refer to Forth as a virtual machine, which is software pretending to be a physical machine. In part, this is because it is not just a programming language, but also an operating system. Despite this, Forth is simple. It can run on a few kilobytes (kB) of memory. When coded appropriately, it seems to be its own independent language, but with a lot of English-like words.

While Forth was invented by Charles (Chuck) Havice Moore II (1938 – ) in 1970. It was operationalized by Elizabeth (Bess) Rather (1940 – ), who – with Moore – started Forth, Inc. in 1973. Rather refined and ported Forth to numerous platforms throughout the 1970s. She also chaired the ANSI Technical Committee that produced the ANSI Standard for Forth (1994).

Forth was made specifically for the real-time control of telescopes at the United States National Radio Astronomy Observatory and, later, at Kitt Peak National Observatory. A real-time response is one that guarantees that something will happen within a specified time period. In other words, it sets a deadline for something to happen, usually one that is relatively short. Thus, a real-time process is one that happens within defined time steps of some maximum duration.

Forth is the antithesis of Ada. Wikipedia defines Ada as “a structured, statically typed, imperative, and object-oriented high-level programming language, extended from Pascal and other languages.” In its purest form, Forth is none of these, with the exception of being imperative. Most computer languages are imperative. They use statements/ commands to change a program’s state. Ada originated in the 1970s because of US Department of Defense (DoD) concerns about the high number of programming languages being used in embedded computer systems. They wanted one language to do everything. Unfortunately, with Ada they created a monster that was far too large and complex, that was slow to compile and difficult to run. A compiler (used with a compiled language) requires code to be translated into machine language, before it can be run. In contrast, an interpreter (used with an interpreted language) directly executes instructions without requiring them to have been translated into a machine language, in advance.

Allegedly, a Forth program can be compiled, but not if it contains words that are only evaluated at runtime: DOES>, EVALUATE and INTERPRET are three such words. If even one word has to be interpreted, the entire Forth dictionary would have to be embedded inside the program. Thus, Forth should always be treated as an interpreted language.

Forth is an appealing language because of its one and only guiding principle, Keep it simple! Part of this simplicity involves how the language is used. Leo Brodie – a third main contributor to the language – explains, in Starting Forth, E2 (1987): The interpreter reads a line of input from the user input device, which is then parsed for a word using spaces as a delimiter. When the interpreter finds a word, it looks it up in the dictionary. If the word is found, the interpreter executes the code associated with the word, and then returns to parse the rest of the input stream. If the word isn’t found, the word is assumed to be a number and an attempt is made to convert it into a number and push it on the stack; if successful, the interpreter continues parsing the input stream. Otherwise, if both the lookup and the number conversion fail, the interpreter prints the word followed by an error message indicating that the word is not recognised, flushes the input stream, and waits for new user input. (p. 14) While the use of unusual words may make the above description seem complex, this is a much simpler approach than that used in most other computer languages. A graphic version is shown in the flowchart above. Parse is a word used extensively by people who construct compilers. It refers to the process of dividing a sentence (or in computing, a statement) into words/ grammatical parts and identifying the parts and their relationships to each other.

One major problem with Forth is that its dictionary, more often referred to as a library in other languages, is not uniform. Some implementations come with an adequate dictionary, others less so. Some use words the same way, others give the same word different meanings. This means that Forth implementations can produce very different results, depending on dictionary content. This weakness is probably the main reason why Forth is not treated seriously, and has not been extensively used.

Forth is a stack machine, a computer where the primary interaction is moving short-lived temporary values to and from a storage location that follows the rule: last in, first out. A stack significantly reduces the complexity of a processor. Tasks are expressed as words. Simple tasks usually involve single words . More complex tasks connect together many smaller words, that each accomplish a distinct sub-task. Thus, a large Forth program is almost like a sentence that involves a hierarchy of words, distinct modules that communicate using a stack. Data is only added to the top of the stack, and removed from the top of the stack. Each word is built and tested independently. Provided that words are chosen appropriately, a Forth program resembles an English-language description of the program’s purpose.

Forthwright

Forthright is an adjective, used to describe a plainspoken/ frank/ blunt person. A person who develops/ modifies/ corrects/ improves/ uses Forth programs is referred to as a forthwright, a noun. Both words are pronounced the same way. A wright is a person who makes or repairs something. The original ca. 700 AD Old English wryhta, referred to someone working with wood. Since then, the term has expanded to include many different occupations. Carpentier, now carpenter, was introduced into England only after the Norman conquest in 1066, effectively replacing wright to describe this role. In Scotland, wright is used much more extensively.

Raspberry Pi Pico

The traditional strength of Forth is its minimalist use of resources. This is more important than it may seem. Gordon Earle Moore (1929 – ) formulated an expectation in 1965, later termed Moore’s law, by others, that computing capacity would double every year, some say every 18 months. This doubling cannot continue indefinitely. Many, including Moore, expect it to be invalid from about 2025, giving it a life span of 60 years. Even so, this means that even the most primitive of microprocessors made today has many magnitudes of capacity compared to anything made in, say, 1970. This is why many people prefer to use computer languages that are less optimal.

In contrast to Moore’s law, Niklaus Emil Wirth (1934 – ) formulated a very different expectation in his 1995 article A Plea for Lean Software, later termed Wirth’s law, by others, that software is getting slower more rapidly than hardware is getting faster. Most computer scientists are no longer making software that optimize/ minimize resource use, because they know that ample resources are available.

The reason some few people continue to use Forth is because of their acute awareness of Wirth’s law, where they see the negative impact of software bloat, on a regular basis.

General Public Licence (GPU) and public-domain Forths exist for most modern operating systems including Windows, Linux, MacOS, Android and some Virtual Machines. Such implementations include: gForth and bigForth. Dale Schumacher forked the Raspberry Pi/ARM port of JonesGorth around 2014, and removed its dependency on Linux. It now runs bare-metal, on a Raspberry Pi, booting directly into the Forth interpreter. Many important words have been re-implemented in assembly, or as part of the built-in definitions. Note: In computing, bare or bare metal refers to a computer executing instructions directly on a processor aka logic hardware, without an intervening operating system.

Iteration #2 of Unit One (#2U1), my personal workshop, will officially commence on 2023-11-01, less than two years away. It will transform a construction-support workshop into a fabrication shop, as my career as a wright/ building constructor/ carpenter comes to an end, and my career as a millwright/ machinist begins. My primary emphasis is broad, mechatronics, but the workshop’s role is limited to fabrication. Electronics and programming will probably be done inside Cliff Cottage, while much of the thinking will take place wandering about in the woods.

The purpose of the workshop is for an old man to have fun, to build upon skills learned in the past, and to learn new 21st century skills, to keep his brain and body active. Hopefully, some useful and environmentally sensitive products will be made at it.

There are plans to use Forth as the official shop language/ operating system for computer numerical control (CNC), the automated use of machine tools, controlled by a computer. I expect to have one primary machine that can move in three dimensions, and change heads as required. The two most important heads will be a router, which can shape materials as well as drill holes, and a laser cutter that cuts more accurately and with less waste than a saw. I expect to concentrate on various types of hardwoods as my primary material focus, but not to the exclusion of other materials. These are subtractive processes that remove material. In contrast, 3D-printers are additive.

There is no need to waste money on expensive silicon if cheap silicon will do. The silicon needed to control a CNC mill will be a Raspberry Pi Pico microcontroller. It costs NOK 55 = US$ 6.05 = CA$ 7.75, on the day before publication. Any money saved on silicon will be put into better bearings, and improved versions of other machine components.

Forth is not for everyone. It is useful where there is a need for a real-time system involving mechanical movements. After milling machines, and other types of tools, robots come to mind first, including unmanned underwater vehicles and drones. It should be mentioned in all fairness that Forth is not the only language I intend to use in the future. Two others are Prolog and Lua. Prolog is a logic programming language developed in France in 1971 with a number of artificial intelligence applications. Lua is a multi-paradigm scripting language, developed in Brazil in 1993. Its basic set of features that can be extended to suit different problems.

A dangling Raspberry Pi Pico microcontroller attached to a USB-C power and data connector. On the laptop pinouts for the Pico are displayed, along with its datasheet. Photo: Raspberry Pi.

2021-11-242021-11-26

D. B. Cooper

Tickle The WireFBI Accepts New Evidence in Cold Case of ... — Sketches of “D. B. Cooper” with and without sunglasses, from 1972. Images: FBI, in the public domain.

Fifty years ago today, 1971-11-24, a man identified as D. B. Cooper highjacked a Boeing 727-100. Sometime that day he disappeared.

A middle-aged man stood at Northwest Orient Airlines’ flight counter at Portland International Airport, identified himself as Dan Cooper and purchased a one-way ticket in cash for a 30-minute trip north to Seattle. After boarding the aircraft he, in all likelihood, sat in seat 18C.

Flight 305, with 36 passengers and a crew of six, departed Portland on schedule at 14:50 PST. Shortly after takeoff, Cooper handed a note to flight attendant Florence Schaffner. Although she initially put it in her purse, Cooper asked her to read it. It mentioned a bomb and directed her to sit beside him, which she did. Cooper showed her the bomb, then demanded $200 000 in “negotiable American currency”, four parachutes (two primary and two reserve), and a fuel truck to stand by in Seattle to refuel the aircraft upon arrival. Schaffner conveyed Cooper’s instructions to the pilots in the cockpit, then returned.

William A. Scott (1920–2001), the captain, contacted Seattle–Tacoma Airport air traffic control, which informed local and federal authorities. The passengers were told that their arrival in Seattle would be delayed because of a minor mechanical difficulty. Northwest Orient’s president, Donald Nyrop, authorized payment of the ransom, and ordered all employees to cooperate fully with the hijacker’s demands. The aircraft circled Puget Sound for about two hours while the parachutes and ransom money were assembled, and emergency personnel mobilized.

FBI agents assembled the ransom money, 10 000 unmarked 20-dollar bills and microfilmed each of them. Cooper rejected military parachutes, and obtained civilian parachutes with manual ripcords.

At 17:39, the aircraft landed at Seattle-Tacoma Airport. The aircraft taxied to an isolated, but brightly lit section of the apron. All window shades in the cabin were closed. Northwest Orient’s Seattle operations manager, Al Lee, delivered a cash-filled knapsack and parachutes to flight attendant Tina Mucklow on the aft stairs. Once on board, Cooper allowed all passengers, Schaffner, and senior flight attendant Alice Hancock to leave the plane.

Cooper’s flight plan involved a southeast course toward Mexico City at the minimum airspeed possible without stalling the aircraft—approximately 100 knots = 185 km/h at a maximum 3 000 m = 10 000-foot altitude, with landing gear remaining in the takeoff/landing position, and wing flaps set at 15 degrees, and the cabin unpressurized. This meant that a second refuelling would be necessary. Cooper and the crew discussed options and agreed on Reno, Nevada, as the refuelling stop.

At about 19:40 the aircraft took off with only Cooper, Scott, Mucklow, first officer William J. Rataczak and flight engineer Harold E. Anderson on board. Two F-106 fighters shadowed the airliner, one above and one below, along with a Lockheed T-33 trainer, for part of the trip.

After takeoff, Cooper asked Mucklow to show him how to open the door to the aft staircase. He then ordered her to join the rest of the crew in the cockpit and remain there with the door closed. At about 20:00, a warning light indicated that the aft airstair had been lowered. At 20:13, the aircraft’s tail moved upward movement, requiring trim to level it. The plane landed at 22:15, at Reno Airport. Cooper was no longer on board.

From my perspective, the most interesting aspect of the case has to do with investigators describing the highjacker as D. B. Cooper, rather than the name he used on his ticket, Dan Cooper. Agents theorized that Cooper took his alias from a popular Belgian comics series of the 1970s featuring the fictional hero Dan Cooper, a Royal Canadian Air Force test pilot in a Belgian comic book/ graphic novel series, who participants in numerous heroic adventures, including parachuting. These comics were never translated into English, nor imported to the U.S. Thus, there are suggestions that Cooper was Canadian. In particular, the phrase “negotiable American currency”, aroused attention, because it would seldom be used by Americans.

https://upload.wikimedia.org/wikipedia/en/c/c7/DanCooper_270.jpg — Dan Cooper is a Royal Canadian Air Force test pilot appearing in *Les Aventures de Dan Cooper*, illustrated and written by
Albert Weinberg (1922 – 2011) and published in 41 albums from 1957 to 1992.

On 1980-02-10, Brian Ingram (ca. 1972 – ) uncovered $5 800 of the ransom from the Columbia River bank at Tina/ Tena Bar, about 14 km downstream from Vancouver, Washington. This is the only money from the highjacking that has ever been recovered.

There have been any number of suspects. Only one will be mentioned. In an article by Jake Rossen, writing in Mental Floss, in 2016, he suggests that D. B. Cooper may have been Barbara Dayton (1926 – 2002), who, before gender-reassignment surgery in 1969, was born Bobby. For the high-jacking she had disguised herself as a man. Pat and Ron Formans’ book, The Legend of D. B. Cooper (2008) gives a more detailed version.

There are any number of sources of information about D. B. Coooper, including a Wikipedia article that has provided much of the information here.

2021-11-202022-06-24

Honda e-Cub

A 1958 Honda Super Cub C100 featured a low-floor backbone step-through frame. The inexpensive but light weight plastic front fender and large leg shields, involved the first motorcycle use of plastic. The 17-inch wheels gave the vehicle a stability not found in scooters. The power train involved an automatic centrifugal clutch, 3-speed transmission, and an air-cooled 4-stroke 49 cc OHV engine. Top speed = 64 km/h. Wheelbase = 1 181 mm, Length = 1 781 mm, Width = 569 mm, Mass (wet) = 65.0 kg. Photo: Honda.

The Honda Cub is the best selling motor vehicle of all time, with over 100 million having been made in the years since 1958, when it was launched. Its origins are not in Japan, but in 1956 Europe when Honda co-founders Soichiro Honda (1906 – 1991) and Takeo Fujisawa (1910 – 1988) toured Germany and experienced the popularity of mopeds and other lightweight motorcycles.

Fujisawa was inspired, and wanted to produce a motorcycle for everyone: urban, rural or somewhere in between, living anywhere from a developed to an emerging economy. It had to be simple to survive in places without roads, advanced technology or access to reliable spare parts. It had to be quiet, reliable and easy to use. It also needed to have mass appeal, so that it could be produced on an enormous scale.

A scooter was considered but rejected: it was too complex for people in emerging economies, and, its wheels were too small for poorly maintained roads. Fujisawa specified ease of driving, by requiring that it could be driven with one hand while carrying a tray of soba noodles in the other. He is quoted as saying, “If you can design a small motorcycle, say 50 cc with a cover to hide the engine and hoses and wires inside, I can sell it. I don’t know how many soba noodle shops there are in Japan, but I bet you that every shop will want one for deliveries.”

Honda’s new vehicle was a 1958 Super Cub C100. It featured a low-floor backbone step-through pressed-steel frame. One important innovation, was their use of inexpensive but light weight plastic for the front fender and leg shields. This was the first motorcycle use of plastic. While the vehicle combined the characteristics of a scooter with the stability of a motorcycle. The 17-inch wheels, especially, gave the vehicle a stability not found in scooters. An automatic centrifugal clutch 3-speed transmission, and an air-cooled 4-stroke 49 cc (despite the model name) OHV engine, powered the vehicle. Top speed 65 km/h. Wheelbase 1 181 mm, Length 1 781 mm, Width 569 mm, Mass (wet) 65.0 kg.

The design was tested in advance of production, to eliminate any flaws. It would cost too much to fix problems after production started. It almost worked, except for an issue with the clutch, that required production and sales staff to visit each customer at home to fix each vehicle.

The early history of the Honda Cub will end here, with interested readers encouraged to either read the Wikipedia article or watch a more enjoyable but less extensive 8 minute video about it.

One challenge facing the world is reducing carbon emissions, and eliminating fossil fuels. This means transforming Honda Cubs into electric vehicles. So, even though Honda made an e-Cub prototype in 2019, they have never developed it into a production model. Why not? Is it because they are in too close a relationship with fossil fuel suppliers?

The facilities of Shanghai Customs Ltd, 57 Gao’an Road (near Hengshan Road), Xuhui District, Shanghai. Please note the Cub inside the facilities being modified, and the logo on the wall. Photo: Shanghai Customs.

Shanghai Customs Ltd was founded by Alexander Style. It sells e-Cub kits throughout the world for US$ 2 800. There are three kits available for the C50, C70 and C90 models. The non-battery kit lacks more than just a battery. However, it claims to come with everything needed except a battery, charger, frame, front forks and front suspension. One step up is the full kit. The name is a misnomer, since it too is another partial kit, which is like the above kit but with a battery and charger. The full kit with frame and forks provides everything needed for an e-Cub build. Kits are designed for amateur installation, described as plug and play, with colour coded and numbered wiring. Assembly takes from about 15 hours of work, using only hand tools. The finished e-Cub is powered by a removable 1.3 kWh Panasonic battery that provides energy to a 1 000 W, rear hub motor, that can be boosted to 3 000 W for short periods. Top speed for the vehicle is still 65 km/h, with a range of 50 km. Included in the kit are new LED lights, and fully digital instrumentation.

Fully Charged YouTube channel presented a nine minute video about the company, and its conversion kits.

Phil Tucker commented 2021-02-25 on the YouTube video: “(Don’t get me wrong as I’m a massive “all electric” fan….) but I’m not necessarily convinced that someone who maybe bought an old hand me down cub off an older brother or sibling for say, fifty dollars to use to go to work on is then going to decide to spend 2500 dollars to go electric! Also I think some of those brand new Chinese electric bikes are actually cheaper than that?”

This brought several interesting replies including one from Siclmn Cyclerider: “I spent $6,000 on a Stromer electric bicycle.” However, several others commented on the need for improved brakes, that appear to come with the kit.

To put the e-Cub in perspective, it should probably be compared with a minimalist electric car, such as a Citroën Ami, measuring 2 410 mm in length, 1 390 mm (excluding mirrors) in width and 1 520 mm in height, with a total weight of 485 kg. It has a 6 kW electric motor operating at 48 V, and powered by a 5.5 kWh lithium-ion battery. It is registered as a light quadricycle for two, allowing a top speed of 45 km/h, and a range of 75 km. When it was first released, it came with a purchase price of $6 600, a leasing fee of $22 per month, or an on-demand rental for around $0.29 per minute.

One major difference between the two vehicles is that while the Ami is a purchase of a product, the e-Cub is buying parts for a project. This involves people with two totally different mindsets. The e-Cub will only appeal to people who have the desire, time and opportunity to customize their own vehicle. The Ami will only appeal to people who want to buy happiness.

Note: There will be no attempt to enter fruitless discussions about other best selling vehicles. Contenders will not even be named. The point of this weblog post is to examine a potential waste recycling challenge, that allows people to continue to use a perfectly good vehicle, despite its currently inappropriate power source, by replacing it with a suitable electric power train. Mopeds may not be for everyone, but this writer is convinced that in Inderøy they are part of a Rite of Spring where, much like the return of the swallows to Mission San Juan Capistrano, thousands of mopeds appear on the roads, allowing their 16-year old drivers to self-certify themselves as adults, and slowing traffic to 40 km/h. More mature readers, no longer subject to the excesses of teenage hormones, may prefer to see new opportunities that emerge from using a mobility scooter which, fortunately, are already electrified.

To this day, a Honda 50, probably a 1966 model, owned at the time by Victoria Ayerbe, is the only motorcycle I have ever driven, and only once. I have no intention of repeating this experience with either a fossil fuelled or electrified motorcycle. Indeed, I have no intention of converting a Honda Cub to an e-Cub. However, I would like to encourage people in Inderøy involved in the electrification of old scooterettes, as they were often called, possibly at Reodor, Inderøy’s bicycle repair shop. There could be other two-wheeled vehicle models that, because of local popularity, are more deserving to be adapted to electric power. Making kits for these could be an enjoyable community project. If readers have particular candidates for conversions, please tell other readers about them by making appropriate comments.

2021-11-152021-10-22

Intel 4004

*An Intel C4004 microprocessor with gray traces. (Photo: Thomas Nguyen)*

Today (2021-11-15) is the 50th anniversary of the Intel 4004 microprocessor. This featured a 4-bit central processing unit (CPU). It was the first microprocessor to be sold as an electronic component. At the time of its development, Intel considered itself a memory chip manufacturer. At about the same time, three other CPU designs were being developed, but for specific projects. These were: Four-Phase Systems AL1, (1969); American Microsystems MP944 (1970); and Texas Instruments TMS-0100 (1971).

The Intel 4004 project began in 1969, when Japanese adding machine manufacturer Busicom, approached Intel to manufacture a chip it had designed. Intel was a start-up, so small that they didn’t have the staff to design the logic required. Thus, they came with a counter proposal, to build a general purpose computer-on-a-chip and to emulate the calculator architecture using a read-only memory (ROM) byte-code interpreter.

Frederico Faggin (1941 – ) was assigned responsibility for the project. He was able to design a customer-programmable microprocessor. The work included logic design, circuit design, chip layout, tester design and test program development. His initials F.F. were incorporated into the chip design. Assisting in the development process was Masotoshi Shima (1943 – ), a Busicom software and logic designer, but without any chip design experience. The chip was first used in the Busicom 141-PF adding machine.

Faggin is known for several microprocessor inventions. These include the buried contact, and the bootstrap load. He also created the basic methodology for random logic design using silicon gate technology. He was particularly vocal inside Intel in advocating the 4004 as a general purpose microprocessor, with a huge market potential. He subsequently led the design of the 4040, 8008 and 8080 processors.

Faggin was presented with the engineering prototype of their calculator with the first 4004. This was subsequently donated to the Computer History Museum.

Faggin and Ralph Ungermann (1942 – 2015) left Intel in 1974 to start Zilog. Intel’s reaction was to disown Faggin, and to rewrite company history. In particular, it credited more loyal, but less competent, employees, with the 4004 design.

2021-11-092021-11-05

Zahara: A tidbit

Bulelwa Mkutukana, stage name Zahara = blooming flower. Born in East London, South Africa (1987-11-09 – ).

One Track: Loliwe The name refers to the train that brought workers back home after many years of working in Johannesburg, where they often had other families.

One Quotation: In an interview, Zahara described this first album as a metaphor. “It’s like … just pick yourself up. No matter who’s your father or who’s your mother … I believe that you’re not a mistake.”

One Comment: Zahara is a South African singer-songwriter and poet who sings in Xhosa and English. She started to sing at the age of six. Zahara released her debut album Loliwe in 2011 which sold over 100 000 copies in South Africa. Her debut single, Loliwe, featured here, currently has had over 1.8 million views on YouTube.

2021-11-072021-11-05

Oscillations

This weblog post is written to celebrate the upcoming 10th anniversary of Vortex Bladeless, as a concept, and the 81st anniversary of the collapse of the Tacoma Narrows Bridge on 1940-11-07. I have watched videos documenting the bridge collapse many times, and shown these to students in science classes over the years. Unfortunately, I lacked the insight of David Yáñez who was able to see the potential of oscillations in the generation of electricity.

David Yáñez and the Vortex Bladeless Tacoma at Avila, Spain in 2019. Photo: Vortex Bladeless.

Preliminary considerations

Living on a cliff-face, the residents at Cliff Cottage experience some wind, but less than many people might expect. The one-word reason is updraughts. That is, when the wind hits the cliff, it is deflected upwards, and then over the house. While the residents have considered installing horizontal bladed wind turbines at the cliff-face to provide electrical power, that take advantage of these updraughts, there is probably too little energy to make any investment economically worthwhile.

For example, a product was being offered on Kickstarter. On 2020-09-29, Nick Hodges, founder of Halcium, in Salt Lake City, UT, launched a funding round for (yet another device referred to as) a Powerpod, which was described as the “safest, most powerful wind turbine in the world”. He set US$ 200 000 as a minimum goal. When the fundraising period ended at the end of 2020-10, the goal was not met.

The product offered by Hodges, was not ideal for Cliff Cottage. The wind we are interested in using comes from one direction only, so being able to take advantage of wind coming from anywhere does not offer any advantages.

A major problem with the Kickstarter launch was an amateur approach to the electrical technology. After reading a description of the project, one was left with more questions than answers. Hodges apparently has a degree in small business management and an MBA with a finance emphasis from Arizona State University.

As another resident pointed out to me, entrepreneurship requires three competencies, finance (and related areas of business management), marketing and technical competence. From the material presented, it was obvious that Hodges had marketing competence, but lacked science and engineering skills.

For example, he claimed that Powerpods are “cheaper than solar panels and more efficient in places that get fewer than 300 days of sun a year.” When examining this statement, it is difficult to understand the specific apples and oranges being compared and contrasted. The number of square meters of solar panels is unspecified. Wind speed is an unknown factor, and there didn’t seem to be any documentation that related wind speed to power produced, only an attractive graph comparing power from a Powerpod with power from a normal wind turbine, whatever that is.

The number of days of sun is an unusual metric. Sunshine duration in hours per year is more common, something that can be determined using a World Meteorological Organization (WMO) standardized Campbell-Stokes recorder, which has been in common use since 1962. In 2003, the sunshine duration was finally defined as the period during which direct solar irradiance exceeds a threshold value of 120 W/m².

There are claims that each 1kW in the Powerpod wind turbine creates up to three times more power than a regular, mounted turbine. The extra power comes from the blade system in the pod. While there is a graph showing this magic, there appear to be no supporting documents. There are no wind speed or power measurements, In fact, the graph incorrectly expresses power in volts, rather than correctly in watts.

The Powerpod system uses 12 Volt components. These are typically used on recreational vehicles to be compatible with vehicle electrical power systems. While they are used in residential systems, 48 V is quickly becoming the new standard. In part, this is because of the high amperage involved with 12 or 24 V. Transmitting 960 W of power with a 12 V system involves wiring capable of transmitting 80 A. With 48 V this is reduced to 20 A. Of course, if this power has to be transported any distance, it will have to be even thicker. Thick wiring is expensive and difficult to obtain.

Hodges goes on to compare wind and solar energy. In Norway it costs from NOK 30 000 to NOK 120 000 to have solar cell panels installed on an average single-family dwelling. This is typically financed by re-negotiating an existing mortgage. On average, the payback time for such an investment is about 17 years. The life-expectancy of the solar cell panels is from 25 to 50 years, and manufacturers offer a 25 year product guarantee on the solar cell panels, so that house owners do not face additional risks. Inverters may have a shorter life-span, and are not usually covered by the guarantee.

Unfortunately, the climatic situation in Norway means that solar panels can only produce substantial quantities of electricity during the summer. It is not that the equipment doesn’t work in the winter. Rather, the sun is close to the horizon, and not visible for many hours. On the date of publication, sunrise was at 08:16, sunset will be at 15:41. This gives 7h24m 43s of daylight. At the winter solstice (2021-12-21) daylight hours will be reduced to 4h17m21s. At the next summer solstice (2021-06-21) there will be 20h53m32s of daylight. Selling power usually requires one to participate in a spot-market, where prices are usually low in the summer, but high in the winter. Despite this, most people who install solar panels in one form or another want to connect to the mains in order to to sell excess electricity, or to access electricity when there is a production deficit. Batteries could be used, but new batteries are expensive. Some people will decide to buy discarded batteries from electric vehicles and store electricity with these. This is a more common model for cabin/ vacation cottage solar panels, less common for primary residences, because the cost is too large in relation to potential savings. Once again, people have risk aversion.

Another approach is to produce electricity in the summer and store it until it is needed in the winter. While the return-on-investment calculation for this looks good, mainly because of the high price for electricity in the winter, a large battery capacity is necessary.

Hodges’ main goal is admirable. He wants to reduce dependence on fossil fuel. He wanted to use the $200 000 funding to mass-produce Powerpods. The money sought would cover the cost of having the product tested, the raw materials for products being sold as part of the kickstarter project, as well as factory tooling.

After reading the project description, I was not totally convinced that Hodges had a viable product, or the necessary skills to make one. Hodges should partner with someone who has the necessary electrical engineering skills. This would allow for the development of the entire infrastructure needed for off-grid power production. These will have to meet agreed standards. At a minimum this consists of battery storage, a suitable inverter and a net metering system to allow produced energy to be used in the residence, or fed to the grid (especially at peak times). The equipment must be able to handle abnormal situations, such as power surges and power failures. The system should also prohibit sending power onto the grid, when it is down, as this could be potentially dangerous for crew members working to restore power.

There are also a number of legal issues that have to be negotiated, including energy purchase and sales agreements, and liability (including liability insurance). The specifics vary from jurisdiction to jurisdiction. Thus, it might be appropriate for Hodges to restrict his sales to Utah, and to find other people to cooperate with in other states, provinces and countries.

At Cliff Cottage we probably won’t participate in such a project. Instead, we will work slowly and methodically to find solutions that meet our specific energy needs. As a first step this will involve measuring wind speeds at the cliff face, to determine if wind energy is viable. If it is, then this process will slowly intensify as we select a more viable solution.

A More Viable Answer

The Vortex Bladeless turbine, popularly referred to as the Skybrator, has its origins in 2012 after David Yáñez watched a video of the Tacoma Narrow’s bridge oscillating in the wind. Since then, Vortex Bladeless, a Spanish tech startup, has been working to produce electricity from oscillations induced by wind.

Vortex Bladeless is a vibration resonant wind generator: It does not rotate, and is not a turbine, in contrast to the common horizontal-axis wind turbines (HAWT) and less common vertical axis wind turbines (VAWT) that work by rotation. Instead, it harnesses energy by allowing a fibreglass and carbon fibre reinforced polymer mast to oscillate in the wind, taking advantage of von Kármán vortices that form when a moving fluid (air) passes over a slender structure (the mast). At the bottom of the mast, a carbon fibre rod moves an alternator to generates electricity.

Wind turbines have issues, including maintenance costs, amortization rates, noise levels, bird deaths and other environmental impacts. Remote locations can have logistics challenges, while their visual and aural impact on a location is not always appreciated. The mass (and dimension) of vortex generators, indicate that they will use less raw materials in their construction compared to rotary wind turbines of the same power. They have a low centre of gravity that allows for a smaller foundation and less wake turbulence. Thus, they can produce more power (greater energy density) per unit of land area.

However, the market Vortex Bladeless envisions if for a small wind-turbine alternative for the end-consumer market and for low-power systems. These are markets that are served poorly (or not at all) by larger-scale wind turbine manufacturers.

Vortex Nano – 1 m high and 3 W nominal power output. For off-grid, low-power systems, especially with solar panels.
Vortex Tacoma – 2.75 m high and 100 W nominal power output. For small-scale residential/ rural autonomous operation, with solar panels.
Vortex Atlantis/Grand – 9–13 m high and around 1 kW nominal power output. For residential/ rural autonomous operation, with solar panels.

All of these are slender, vertical, cylindrical devices, composed of two main parts: a fixed base where the device is attached to an anchor, and a flexible mast which, acting as a cantilever, that interacts more freely with moving fluid (air) in an oscillating movement. The oscillator has no gears or moving parts in contact with each other, so there is no need for lubricants.

A linear alternator, with neodymium magnets and its stator is located inside the moving part of the device, converts mechanical to electrical (chemical) energy. During this process the alternator damps/ cushions the induced oscillation movements. These devices operate with minimal maintenance and operating costs.

Tacoma Narrows Bridge

There is 1.4 km of Puget Sound separating Tacoma from Gig Harbor. Yet, before the construction of the Tacoma Narrows Bridge, one had to drive 172 km between them. With the bridge in place, this was reduced to 13 km. The bridge also linked McChord Air Field near Tacoma with the Navy shipyard in Bremerton, both important elements of the American military’s infrastructure, and probably the most critical one that allowed the funding of the bridge. Washington States bridge engineer, Clark Eldridge, had proposed a conventional design for the state highway department and Toll Bridge Authority. However, the federal Public Works Administration, insisted that bridge engineer Leon Moisseiff, designer of the Manhattan and Golden Gate bridges, be hired as the lead consultant and designer, and to use deflection theory as the basis of the design, producing a lighter, narrower, more flexible and cheaper structure.

Construction of the bridge started in 1938 and took 19 months. When finished, the Tacoma Narrows Bridge had an 853-meter-long centre span, almost half its total length. It was the third longest suspension bridge in the world, behind the Golden Gate and George Washington bridges. It also had the smallest ever width-to-length ratio: 1 to 72. Even before the bridge was completed the bridge deck shook in a wave-like vertical motion. This earned the bridge its nickname, Galloping Gertie. The bridge opened on 1940-07-01.

On 1940-11-07/ November 7th, 1940/ 7 November 1940, south-westerly winds, with gusts up to 68 km/h began to buffet the bridge. The deck began its customary rippling, bouncing up and down with more than a meter of displacement from its normal position at times. Shortly after 10:00 traffic was halted because of bridge deck oscillations. Soon after the bridge’s vertical movement was supplemented by a twisting motion that whipped the deck up and down to either side of the centre of the roadway. The twisting grew increasingly severe, with one sidewalk up to 8.5 meters higher than the other.

At 11:02., a 180-meter portion of the centre span gave way, crashing into the water below. Additional sections followed. The last major section fell at 11:10. With most of the centre span gone, all that was left were dangling suspension cables, a hole between the two towers and remnants of sagging side spans at either end of the bridge.

Earth magazine has an article that provides further information about this bridge failure.

2021-10-292022-06-26

Downsizing the Garage

The Nobe 500, one of six European vehicles featured in this weblog post. Photo: Nobe

Four years ago today, on 2017-10-29, a weblog post titled Stuffing a 10-car garage was published. It presented a number of electric vehicles (EVs) that had awakened my curiosity over the years, along with one internal combustion engine (ICE) vehicle, the Citroën Berlingo. The one advantage of a virtual garage is that it is very easy to acquire and then dispose of vehicles.

The 2021 United Nations Climate Change Conference, the 26th held (COP26), is scheduled to begin 2021-10-31 in Glasgow, Scotland, two days after publication of this weblog post. The conference will end 2021-11-12. Hopefully something will be accomplished to prevent a climatic disaster.

EVs are not only increasing in number, but improving, technically and in terms of design. Unfortunately, most of this development is happening in vehicle segments that people should be avoiding . This weblog post presents six EVs made by six companies for six different segments from six different European countries. During the year this post has been in development, all of the models originally selected have departed the list, and been replaced by others. The number of continents represented has decreased from four to one, with an encouragement for people to buy locally produced products. I don’t believe I could do the same using North American products. Even, with this focus on smallish, affordable European EVs, it has been difficult.

Not many specifications are available for the selected vehicles at the time of publication. Those missing will be provided in subsequent updates, when I remember. The worst case situation in this post, is that of Fiat and its Giardiniera. Despite the initial hype and promises, at the moment it is looking more like vapourware. It is included to remind people that vapourware is a major problem in the automotive industry. It allows manufacturers to pretend that they are doing something, when in all likelihood nothing is happening at all.

In terms of the A segment, I had hoped that the Zetta CM1 had been developed further. I had wanted to put an improved Zetta in the A class, and even contacted the manufacturer, Russian Engineering and Manufacturing Company (REMC) in Toliatti about it. I received no reply to my email.

Segments D and above/ larger are ignored in this post out of concern for the environment.

Company	Model	Segment	Country
Nobe	500	Pickup	Estonia
Renault	Kangoo	MPV	France
Microlino	Microlino	Micro (L7e)	Switzerland
Freze	Nikrob	A	Latvia
Fiat	500 Giardiniera	B	Italy
Sono	Sion	C	Sweden

Six companies producing six vehicle models for six segments in six European countries.

Nobe 500

Pickups are typically regarded as American, so there would probably not have been many objections if this slot had been filled by any number of American vehicles including, in alphabetical order by brand, the Ford F-150 Lightning, the GMC Hummer, the Lordstown Endurance, the Rivian R1T, and the Tesla Cybertruck, There was a time when this list might have also included the Havelaar Bison and the Nikola Badger.

None of the vehicles listed above appeal to me. They are too massive. However, I will also admit, that the first vehicle I leaned to drive on, at the tender age of 14, was a Chevrolet Advance Design 3100 pickup, probably from 1952, in the farm fields of Okanagan Mission, near Kelowna. This featured the same split windshield, found on the Nobe 500. The Ford F-series, from the same time period, did not have this characteristic, although certain other F-series features do appear on the Nobe 500. This vehicle is at the top in terms of charm. I am waiting for it to appear dressed as a woodie (sic) wagon before buying one!

Renault Kangoo

In terms of COP26, this vehicle should probably not have been included. It is, but only because of my infatuation with this type of vehicle. People should determine if this is the type and size of vehicle that meets their needs.

When we purchased a Citroën Berlingo in 2002, the other vehicle we considered was a Renault Kangoo. Both were considerably smaller than today’s vehicles. The Citroën was chosen, in part, because at that time there was no local Renault dealership. Currently, we are facing the opposite situation. There is no local Citroën dealership, but there is one selling Renaults. In addition, there are some indications that the upcoming 2022 Kangoo EV (termed Etech, previously ZE in Renault-speak) will offer a range of 285 km. Other specifications released so far include: battery capacity theoretical/ usable = 52/ 47 kWh; motor type = AC synchronous motor; power = 90 kW; torque = 245 Nm; and, importantly, a trailer towing weight braked = 1500 kg.

On 2021-10-28, a day before publication, we visited the local Renault dealer in Steinkjer, and found out that a vehicle should be available to test drive in 2022-05.

Badge Engineering: The Renault Kangoo will be badge engineered into a Mercedes-Benz EQT and a Nissan Townstar.

Microlino

Driving requirements vary, which means that a variety of vehicle types have to be made available. Many people live alone, and have little or no need for a vehicle that can transport more than themselves. For such people, a two person vehicle may be ideal.

In Our Journey, the idea for the Microlino originated when Wim, Oliver and Merlin Ouboter, asked: “How much car does one really need for daily driving?” In Switzerland the answer involved 1.6 passengers and 36.8 km on an average journey, along with parking challenges. This indicated to them that modern cars were over-engineered for urban use, especially if environmental factors, such as global warming, are considered.

Specifications: Overall length / width / height = 2 435/ 1 473 / 1 501 mm; wheelbase = mm; ground clearance = mm; curb weight = 513 kg; seating capacity = 2; battery type = Lithium-Ion (NMC/NCA); battery capacity = 14 kWh; range per charge = 230 km; motor type =; power = 12.5 kW; torque = 118 Nm; speed: max = 90 km/h; acceleration 0 – 50 km/h = 5s; regenerative braking = yes; cargo volume = 230 l; towing weight braked = 0 kg .

Freze Nikrob

Another answer to the Ouboter question could have been the Freze Nikrob, based on the Wuling Mini EV. Rebadged and restyled by Dartz, it is assembled in Lithuania by Nikrob UAB. Dartz wants to sell the Freze Nikrob and its convertible version, the Freze Froggy, in European left-hand-drive markets. It aims for a 10-20% market share of the segment. At a price of €10 000, it is the cheapest in the EU. The focus is on selling to carsharing companies.

Specifications: Overall length / width / height = 2 917/ 1 493 / 1 621 mm; wheelbase = 1 940 mm; ground clearance = mm; curb weight = 665 kg; seating capacity = 4; battery type = lithium polymer; battery capacity = 13.8 kWh ; range per charge = km; motor type = permanent magnet; power = 13 kW; torque = Nm; speed: max = km/h; acceleration 0 – 100 km/h = s; regenerative braking = yes; cargo volume = l; towing weight braked = 0 kg.

Fiat 500 Giardiniera

Giardiniera was a name used for Fiat station wagons. The name, in this context, means gardener. Fiat in 2018, before it became part of Stellantis, announced in general terms that it would be making a five-door, station wagon, hybrid version of a new 500. Fiat now seems to be transitioning to a battery electric brand. A Fiat 500 Battery EV station wagon appeals to me because, we need a vehicle that can be used to carry four (sometimes five) people, groceries, and workshop materials. When, or even if the vehicle will launch, remains speculative. Currently, Fiat is working on an electric replacement for the Panda, probably based on the Centoventi = 120 prototype. That vehicle is expected to launch in 2023.

One of my hopes with the Giardiniera is that the rear door will open more like a conventional door, hinged on the left/ traffic side, rather than a hatch, opening upwards. This was the way it opened on earlier models, made between 1960 and 1977, as shown in the above advertisement.

Sono Sion

Of the vehicles described in this weblog post, the Sono Sion is the one closest in size to our current vehicle, a Mazda 5. Of its many attractive characteristics, it is its Open Service System that will be focused upon here. There are three different levels of service. Level 1 instructional videos and a catalog ensure that almost anyone can replace wear parts, without much prior knowledge. Level 2 involves a publicly viewable and available manual, that allows an extensive network of mechanic partners to offer more extensive repairs and service at an affordable price. Level 3 is for repairs involving high-voltage or body parts, Sono here wants to cooperate with an established European service provider.

I asked a number of people about this vehicle, and sent a copy of an information brochure. One response – from a person who works in the EV industry but for another company that doesn’t compete in the same market, was: “Oh interesting. Exciting for more players. The solar portion is neat! The aesthetics kind of baffle me. Utilitarian, met with early 2000’s interior design with forced elements like the screen and the green house strip. Doesn’t seem cohesive.” Another reply was: “it looks very generic Aka like a Toyota.” The most enthusiastic response came from a third person, “Love it. I’m a solar power human, so this has my full seal of approval.” Four and a half hours later, he added: “Upon further reflection, I would rank this as my top EV.”

Specifications: Overall length / width / height = 4 470/ 1 830/ 1 660mm; wheelbase = 2830 mm; ground clearance = 165 mm; curb weight = kg; seating capacity = ; battery type = liquid cooled lithium ion; battery capacity/ usable = 54/ 47 kWh; range per charge = 260 km; motor type =; power = 120 kW; torque = 270 Nm; speed: max = 140 km/h; acceleration 0 – 100 km/h = 9.0 s; regenerative braking = yes; cargo volume = 650 l; towing weight braked = 750 kg.

Personal Reflections

One of the most important specifications for a vehicle operating in a rural environment in winter is ground clearance. Here, there is no requirement to remove snow before it reaches 100 mm. Thus, ideally, this should be at least 150 mm clearance. However, is not always an easy specification to find. Our Mazda has only 135 mm, and this is noticed. Seating height is also important. In comparing different vehicles, the H-point measures the pivot centre of the torso and thigh, and the height of this in relation to the road, is what is important. This value is a compromise between being able to enter a vehicle elegantly, and being able to see the road.

In terms of range anxiety, we drive a car about 3 times a week, but often less. Once or twice the return distance will be under 40 km, often under 30 km; the other time(s) it will be under 80 km. About five times a year, our driving exceeds these values. Two or three times it will be less than 250 km; two or three times it will exceed that, but be under 400 km. Since our retirement started in 2017, we have only had one trip where the driving distance exceeded these values, when we drove to and from Bergen. It is about 750 km in each direction, but we spent two days driving each way, which also puts it in the 400 km a day range. When our daughter, Shelagh, lived in Umeå, Sweden, we would drive the 600 km distance in about 10 hours (including stops) in a single day.

The Norwegian Electric Car Association has an EV selector app (Elbilvelgeren), that can be used to help limit the number of EVs under consideration.

A screenshot of the Norwegian Electric Car Association has an EV selector app (Elbilvelgeren).

It allows one to select a range of values for price, range, brand, new or used, trailer capacity. Yes, trailer = tilhenger (in Norwegian) capacity is a must for Norwegians. A utility trailer is used instead of a pickup. These are the standard inputs one can choose from. In addition one can select/ add: launch year, heat pump, four wheel drive, high speed charging, battery size, trunk/ frunk size, electrical power usage, normal charging, number of doors, ground clearance, app for the car, number of seats, dimensions, roof rack capacity, acceleration, kW (power), guarantee, weight, wheel size and body type.

I used the standard one with some modest values, but only two cars came up: VW ID 4 and Skoda Enyaq. The list included both current and announced models to be purchased new. The reason only two models appeared could be because of the trailer capacity selected (1000 kg) and a price (max NOK 360 000). The two cars had a price of just under NOK 350 000. Of those two, I would select the Skoda. I tried the selector again, without the trailer, but with a ground clearance of 150 mm. Again, those two models came up, along with a Hyundai Kona and a Kia Soul.

My hope is that in four years time, 2025-10-29, that there will be a vastly improved EV market, with many more vehicles in the A – C segments, and even smaller vans/ multi-purpose vehicles.

The ICE Age

Frequently, I am accused of being a Citroën 2CV fanboy. In reality, I have always preferred the more elegant Citroën Dyane and the more practical Renault 4. However, I am more enthusiastic about fourgonnettes = small panel vans. French models include: the Citroen AU, AZU, AZ and, especially, the Acadiane, based on the Dyane, and the Renault 4 Fourgonette. English models include: the Morris Minor 1000 van variants, and the Traveller, a station wagon. However, the Hillman Husky, another small wagon, was my favourite. Since moving to Norway, I have come to appreciate the Saab 95, sold as a wagon as well as a panel van. Among larger vehicles, my preference is the International Metro Van, designed by Raymond Loewy (1893 – 1986). In terms of European vehicles the Morris Commercial J-type is next best.

I would like to thank those members of School District 40, New Westminster, who ensured that teacher parking, rather than facilities for pupils, were placed in the courtyard of Vincent Massey Junior Secondary School. This provided me ample opportunity to reflect on the merits of various vehicles, and made me an avid fan of European vehicles, because they seemed so much more appropriately sized than their American equivalents. Thank you.

Tama Electric Car

This weblog post will end with a short portrait of a predecessor to the Nissan EVs, such as the Leaf, developed by Tokyo Electro Automobile Company, which was spun off from the Tachikawa Aircraft company. The Tama Electric Car, assigned vehicle code E4S-47 I. E is for electric, 4S is for 4-seater sedan, 47 is for the year 1947, and I stands for the initial type. The Tama brand name refers to the factory location, a city in the Tokyo metropolis, in the foothills of the Okutama Mountains of southwestern Tokyo. Nissan notes, “When this car first rolled out in 1947, Japan was suffering from an acute shortage of oil, goods and food while the supply of electricity had a surplus since there were almost no home appliances or bulk users of electricity.” This particular vehicle was used as a taxi until 1951. Even as I complain about the Citröen E-Berlingo Multispace, it shows how far electric vehicles have progressed during the 70 years between 1947 and 2017.

Tama 1947 Electric Car Photo: Nissan Heritage Collection

Specifications: Overall length / width / height = 3 035/ 1 230/ 1 630mm; Wheelbase = 2 000mm; Curb weight = 1 100kg; Seating capacity = 4; Range per charge = 65km; Motor = 36V DC series-wound, rated at 3.3kW; Batteries = Lead-acid 40V/ 162Ah; Speed: Max = 35 km/h, Most economical = 28km/h.

2021-10-232021-10-22

Clarice Falcão: A tidbit

One Comment: Clarice Falcão (1989-10-23 – ) is a Brazilian singer-songwriter, and actress from Recife.

One Film: In 2007, Clarice won a contest with this short called Laços (Ties), directed by Célio Porto, the boy in the film, and Adriana Falcão (1960 – ), her mother, and presented at the Sundance Film Festival. Her song, Australia, is an integral part of the story.

One Quotation, from Australia:

I’m stuck here in the darkness
Blinded by all the light
Standing outside my body with my body still in sight

One Explanation for this entry: Wikipedia explains that Recife has a dark history, as the first slave port in the Americas. It was founded in 1537, during the early Portuguese colonization of Brazil. Located at the confluence of the Beberibe and Capibaribe rivers before they flow into the South Atlantic Ocean, the city is a major port on the Atlantic. Its name is an allusion to the stone reefs that are present by the city’s shores. The many rivers, small islands and over 50 bridges found in Recife city centre characterise its geography and led to the city being called the Brazilian Venice. It has a relatively high ranking in terms of Brazilian human development index (HDI), ranking highest in Northeast Brazil.

However, Racife also contained the former capital, Mauritsstad, of the 17th century colony of New Holland established by the Dutch West India Company. That fact makes it interesting for me, as the city is part of my biological heritage, and the birthplace of Maria Post in 1649, one of my ancestors. Her parents were from Haarlem, in the Netherlands. After Recife, the family moved to New Amsterdam, residing on Staten Island and then Bergen, New Jersey. Maria herself moved to Schenectady, in upstate New York, where my Norwegian ancestors (the Bratts) had moved, after emigrating from Fredrikstad to Amsterdam and onwards to New Amsterdam.

2021-10-162021-10-16

Trees

2021-10-16 at 10:00 a sycamore maple, *Acer pseudoplatanus*, at Cliff Cottage, is shedding its leaves in preparation for winter. Photo: Brock

Trees have a positive impact on mental health. People exposed to trees have been shown to experience a third less psychological stress in contrast to those without such access. Open grassy areas do not have such an effect, although they also have their value. Even looking at leafless deciduous trees during winter months is positive. Trees and shrubs has been found to increase test scores and graduation rates of students, while decreasing criminal behaviour. In workplaces, increased access to nature (not just trees) has been found to improve employee morale, to increase efficiency, decrease stress, and increase job satisfaction.

My own psychological response to looking at trees is that I begin to think of family and friends, alive and departed, especially those living in Essex county, Ontario – or with origins there, including those living across the American border in Michigan, in British Columbia as well as Norway. At times I considered naming particular trees after specific people, but have resisted this so far. However, looking at trees provides me with a form of comfort.

This week I have been reading David B. Williams, Homewaters: A Human and Natural History of Puget Sound (2021). Apart from the depth of human habitation, with some evidence pointing to 13 960 years, the other intriguing aspect of the environment where I grew up, is its transformation about seven thousand years ago, from a hotter and dryer savannah-like environment with oaks as the major tree, to a cooler and moister environment, “with conifers towering over a nearly impenetrable understory.” (p. 29)

Not all of the trees are conifers. One of my favourite trees is Arbutus menziesii. In Canada, it is referred to as an Arbutus. In Washington state and Oregon, it is called a Madrona. According to Sunset Western Garden Book, Madrone is more common south of the Siskiyou Mountains of southern Oregon/ northern California while Madrona is more common north of this divide. Much of its attraction is related to its distinctiveness. It has the leaves of a deciduous plant, yet is evergreen. Its reddish orange bark peels away in thin sheets, leaving a smooth green trunk. It is common along the protected eastern coast of Vancouver Island, and the Gulf (Canadian)/ San Juan (American) Islands that lie between it and the mainland, and more generally throughout the Salish Sea.

I grew up in New Westminster, British Columbia, not far from Puget Sound. Ash Street is one of few streets named after trees/ plants in the city. The others are Arbutus, Cedar, Cherry, Chestnut, Oak, Pine and Spruce Streets, and Blackberry Drive. Wood Street and, potentially, Holly Avenue are possibly/ probably named after people.

Ash trees are in the Fraxinus genus, and the olive (Oleaceae) family. They are often used as street trees to provide shade. Various sources state that they were once the most-planted urban tree in the United States. Ashes are dioecious, meaning that individual trees are either male or female, but not both. Of the thirteen species of Ash in the world, nine are found in North America: Black Ash (Fraxinus nigra) is native to eastern Canada and the north-eastern United States; Green Ash (F. pennsylvanica) – eastern and northern North America; White Ash (F. americana) – eastern North America; Pumpkin Ash (F. profunda) – eastern North America; Blue Ash (F. quadrangulata) – midwestern United States; California Ash (F. dipetala) – California, Arizona, Utah, Nevada and Baja California; Carolina Ash (F. caroliana) – Cuba, subtropical southern United States; Gregg’s Ash (F. greggii) – Arizona, New Mexico and Texas; and, Velvet Ash (F. velutina) – southwestern North America.

None of the species on the list inhabit the area around the Salish Sea/ Cascadia/ Pacific Northwest. Thus, on 2021-06-30 I wrote to New Westminster’s mayor, Jonathan X. Coté, expressing my concern about naming practices in New Westminster, especially that from the names used, one would think the city was located in England. Noting that there are no members of the Fraxinus genus native to the Lower Mainland of British Columbia, I hoped that “tree” streets would be renamed for native/ endemic species. I received no reply.

At Cliff Cottage, we have one European Ash tree, Fraxinus excelsior. This started life as a seedling in the garden of a colleague in Leksvik. It failed to grow vigorously in its original location, and has been moved twenty meters to a more suitable location. Throughout eastern and northern Europe, the fungus Hymenoscyphus fraxineus, has been causing Ash dieback since the mid-1990s. Some believe the European Ash is in danger of extinction.

I have long-term relationships with several different trees. Perhaps the longest is with one particular European Beech (Fagus sylvatica) tree in New Westminster, that I have admired (coveted?) for over 60 years. I have often wondered about its origins. Once again, the species is not native to British Columbia, so at some point it has been planted. When, by whom and why have frequently occupied my mind.

A European Beach (*Fagus sylvatica*) growing at Cliff Cottage. The photo was taken 2020-10-31. Photo: Trish.

Walks in beech forests in Denmark, and other parts of Europe, has resulted in the belated planting of one at Cliff Cottage. Hopefully, I will live long enough to protect it, so that future owners of this property will continue to let it survive/ thrive for its natural lifetime, 200 – 300 years, when an average beech tree should have reached 25 – 40 meters in height, with a trunk diameter of up to 1.5 meters. In Trøndelag, it is an introduced but naturalized species, at its most northerly limit.

Northwest of my childhood home, but still on Ash Street, there was a Araucaria araucana, a Monkey (Puzzle/ Tail) tree of Chilean origins. It too provoked my curiosity, and I have often considered planting one at Cliff Cottage. They exist in Norway, but the most northerly one is on the island of Smøla, near Molde.

Perhaps the most successful planted tree on our property is a sycamore maple, Acer pseudoplatanus. This is a daughter plant to one found at Utøy elementary school, that our children attended. Naturvernforbundet, the environmental organization usually translated as Friends of the Earth, in English, complains loudly about this species. Yet, it is Inderøy municipality – owner of Utøy school – that has allowed this species to thrive on the school grounds. The school has also distributed seeds to pupils. While the Norway maple, Acer platanoides, is endemic to southern Scandinavia, it is equally foreign as the sycamore in Trøndelag, where both species have been introduced and naturalized. Neither are endemic. I find it hypocritical of biologists to condemn the one species without condemning the other.

Other trees growing at Cliff Cottage are: Norway spruce (Picea abies), Scots/ Scotch/ Baltic pine (Pinus sylvestris), Common juniper (Juniperus communis), eastern/ northern white cedar (Thuja occidentalis), silver birch (Betula pendula), European rowan (Sorbus aucuparia), white poplar (Populus alba), bird cherry, (Prunus padus), Japanese maple (Acer palmatum) – red leaved cultivar, goat willow (Salix caprea), small leaved lime/ linden (Tilia cordata) and red elderberry (Sambucus racemosa). We also have rhododendrons but are uncertain as to the species. At one time we also had two coffee trees (Coffea arabica) growing indoors, but they grew too large and were given away.

The main purpose of this weblog post is to encourage people to enjoy the trees they have access to.

Note: Most of this post was written 2020-08-12, but updated 2021-10-15 and 16.

2021-10-122021-10-12

Ada Lovelace Day

Today is Tuesday, 2021-10-12. Because it is the second Tuesday in October, it is Ada Lovelace Day.

The micro-story behind this posting is that Ada Lovelace (1815 – 1852) collaborated with Charles Babbage (1791 – 1871) on his Analytical Engine. In 1843, she was the first person to publish a computer program. It generated Bernoulli numbers. Lovelace is also considered the first person to foresee the creative potential of the Analytical Engine, especially its ability to create music and art. The date selected for Ada Lovelace day is arbitrary. This day is one that could be one used by people with programming skills to serve humankind in various ways. In many places, it is also a school day, although not this year, and many other years where I live, as a week long autumn school break is being held.

For those wanting more information about Ada Lovelace, one place to begin is her Wikipedia article. In additional to a biography, it also provides other sources of information about her, including books, plays and videos.

At one level this day attempts to raise the profile of women in Science, Technology, Engineering and Mathematics (STEM). Some want to use STEAM, by adding Art. In my time as a teacher of technology, Ada Lovelace day was an opportunity to encourage female students to investigate STEAM, where they might be able to bypass some of those headstrong members of another, weaker gender. This day does not supersede or in any way compete with the International Women’s Day on 03-08,

In terms of the more technical aspects of computing there are many other days that can be celebrated, World computer day is 02-15. It was first celebrated in 2021, with a focus on 75 year old Eniac, described by some as the first programmable, electronic, general-purpose digital computer. At a more practical level, the second Monday in February, is designated the (American) National Clean Out Your Computer Day. Many people have issues regarding the storage of data on their computers, including the taking of regular backups. However, there is also a World Backup Day on 03-31, which could be a better day to focus on such issues.

For those who need more computing days: (Apple) Macintosh Computer Day = 01-24; World Password Day = 05-05; System Administrator Appreciation Day = 07-30; Computer Security Day = 11-30; Computer Literacy Day = 12-02, and National Download Day = 12-28.

Dates in the weblog follow International Standard ISO 8601 formats. Generally, of the form YYYY-MM-DD, however in this specific post there are many in the MM-DD format. ISO 8601 is the only format that the Government of Canada and Standards Council of Canada officially recommend for all-numeric dates. It is my experience that about half the Canadian population uses the American MM-DD-YYYY format, while the other half uses DD-MM-YYYY, necessitating the need for ISO 8601. However, usage differs with context. See: https://en.wikipedia.org/wiki/Date_format_by_country