Insect-sized robots made from very thin layers of elastomer made into low-voltage, power-dense high-endurance soft actuators.
Friday, December 31, 2021
Tesla Crash Lab
Crash testing is based on actual crashes recorded in the fleet, allowing fine-tuning of exactly what crash severity triggers the airbag. Their simulations predicted exactly where each vehicle would end up after the impact.
Thursday, December 30, 2021
Wednesday, December 29, 2021
Garmin satellite texting device and plans
$350 for the mini 3-oz device, plus subscription for monthly usage ($10-$50/mo)
https://www.rei.com/product/140110/garmin-inreach-miniTuesday, December 28, 2021
Vehicles vs deep water compilation
It's amazing to me how many drivers think "If I go fast, I'll have enough momentum to get through," not realizing that the bigger bow wave they create floods their engine, ruining it. Imagine how many dollars damage was done at that one crossing! It seems to be an agent neighborhood because most of the cars are pretty expensive.
Monday, December 27, 2021
First Class Bus "The JET"
Almost Every Town In America Has a Thai Restaurant
0:21 There are ten times as many Thai vs Ethiopian restaurants despite similar populations - maybe because their food is better?
A conspiracy theory that the Thai government secretly funded Thai restaurant establishment around the world.Engineering of the 787 Dreamliner
A remarkably well-informed and illustrated documentary on the innovative engineering of the 787.
15:18 "The fibers of the wing have even been laid in a specific pattern to tailor the stiffness of the wing...so it deforms exactly as the engineers want it to...the wing's shadow actually changes during flight to better suit the needs at different speeds, known as aereolastic tailoring."
16:43 hybrid laminar flow control - a top-secret system that sucks air into the wing through microscopic holes to promote laminar flow
23:12 first airplane to use 3-D printed titanium to minimize metal waste generated during machining of parts
27:54 electric (vs forced air) de-icing on the wings' leading edge allows deicing without spraying glycol over the surface
Sunday, December 26, 2021
Graphene in concrete
Friday, December 24, 2021
747 total engine failure, glides to safety
After this, 37:46, pilots learned to turn 180 (to exit the ash cloud) descend and slow engines to minimum thrust (to prevent glass formation at high temperatures)
Tuesday, December 21, 2021
Making a 13600 horsepower Diesel Engine
16:58 to clean the molding sand off, millions of 2.5mm steel pellets are fired at the casting at 200 kmph (130mph) - this also helps to harden the steel.
27:12 each piston-connecting-rod combo (a "power unit") weighs 750kg (1600lb.)
48:25 it will operate for up to 35 years, maintenance-free.
Monday, December 20, 2021
Abstract: Costume design
32:30 Costume gives you information about the character, in a way that services the story.
Sunday, December 19, 2021
How long is milk good in the fridge?
"it is actually best to store fresh milk in the refrigerator at 4°C and consume it within three days after opening."
"there's even a specific location in your fridge where you should be keeping your milk — and it's not on the door's shelves...milk should be stored at 38° to 40°F in the same container it came in, and far away from the door."
"Once opened, all milk can last for 4-7 days after the milk expiration date."
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