Aluminum: From Precious Metal to Everyday Marvel | August 03 2025, 01:09

The USA imports aluminum mainly from Canada because aluminum leaves Canada and arrives in the USA. And from Europe, it would be alumin𝒊um!

Also, sapphires and rubies are essentially rusty aluminum, where in the process the new material becomes much harder than the original. In interaction with oxygen, different varieties of the mineral corundum are formed, which chemically is crystalline aluminum oxide (formula Al₂O₃). And bulletproof glass is essentially transparent rusty aluminum, aluminum oxide, but with aluminum nitride.

Also, aluminum was the most valuable metal on Earth until the 20th century. When Napoleon III entertained guests, they ate with golden spoons, while he used an aluminum one. And the “cap” of our Washington Monument is made of aluminum for that very reason.

Seattle’s Monorail: A Vintage Transport Still in Motion | July 22 2025, 16:28

Seattle’s two-station monorail (a world record!), reportedly self-sustaining and extremely popular among tourists despite being arguably the city’s most pointless form of transportation, features the same Alweg trains that have been in operation since its inauguration 63 years ago for the World Fair.

Interestingly, even the one-station monorail has a driver. I recently saw a job posting for a Monorail Driver, paying $20/hour (with a minimum wage of $18.67). Roughly the same hourly rate can be earned by stocking shelves in any supermarket in the USA.

However, the only major accident on the Seattle monorail in 2005 was due to a driver’s error. According to authorities, the driver of a train heading into the city failed to yield to another train at a spot where the tracks are too close together for simultaneous passage.

The problem was that the tracks were installed without the gap necessary for the free passage of trains. Imagine that! At one spot, just so:) This was deliberately designed to allow loading ramps to extend beyond the carriages. For 40 years, careful attention ensured that trains never traveled simultaneously on this section. But then one day, a driver decided to leave early — and the rest is history. As always, Murphy’s Law applies.

Nearby in 1988, the construction of the Westlake Center mall uncovered an issue just days before its scheduled opening. Engineers found the west track was two inches (50 mm) closer to the platform and building than it should have been, making it impossible to use. The issue came to light when a retractable loading ramp at the terminal scratched the blue train during a trial run; the misalignment was caused by a pin in a hinge that did not fold properly. The ramp was repaired in November, but other technical issues and prolonged safety inspections delayed the new terminal’s opening by four months. To avoid redesign, trains were simply not allowed to run simultaneously. As of 2025, bi-directional movement is still NOT anticipated above the narrow gauge section at the southern (Westlake) station:-)

By the way, exactly a month ago, the monorail at VDNKh in Moscow, opened 21 years ago, was permanently closed. There, too, nobody understood its purpose, and moreover, it was brutally unprofitable.

In the photo, Nadia enjoys Seattle

Seattle Airport Chaos: IT Glitches and Alaska Airlines Grounded | July 21 2025, 07:07

Seattle Airport is at a standstill – some nonsense with IT systems, Alaska Airlines planes are not taking off (grounded).

UPDATE: remember the door that fell off Boeing mid-flight? It was Alaska Airlines and Boeing 737 Max, which I am currently sitting in.

Exploring the Intricacy of a 3200-Wire Copper Telephone Cable | July 12 2025, 15:11

Copper telephone trunk cable. Here are 3,200 (!) color-coded wires each 0.4 mm in diameter. Such cables are usually made up of twisted pairs (each pair consists of two wires), and 3,200 wires mean 1,600 pairs. The entire cable has a diameter of 9 cm and is produced in 250-meter segments. These segments need to be joined together, and then the ends connected to equipment. So, each of the 3,200 cores is carefully stripped and connected to the corresponding wire of the next segment. Probably a very entertaining activity.