Monday, January 30, 2023
Tesla Reveals NEW Semi Gigafactory
The current Nevada gigafactory is about 30% the size of the eventual, long-promised gigafactory.
Sunday, January 29, 2023
What It’s Like To Deliver For Amazon In New Rivian Vans
Amazon contracts to delivery service providers to deliver packages.
5:12 They have a mere 15 minutes to load their van.
7:45 Driver surveillance and real-time warnings of distracted driving or falling to wear seat belts has decreased accidents by 50%.
12:36 They deliver 350-450 packages per shift
14:44 One Amazon driver moved to a job at USPS to gain stability, union, retirement, more benefits, and annual pay increases.
Friday, January 27, 2023
BMW i7 Cinema on Wheels
Why Most Indians Live Above This Line
Stickiest Non-Sticky Substance
Rammed earth as an insulating wall material
Measuring The Tiniest Forces In The Universe
5:11 standard weight is now referenced to an electrical property, rather than a standard weight, which can (surprisingly) vary over time.
Thursday, January 26, 2023
Wednesday, January 25, 2023
The Points Guy: How aircraft de-icing works
Distinction between de-icing (removes what's there) and anti-icing (prevents further buildup.) "ice on the wings akin to coarse sandpaper can reduce wing lift by as much as 30% and increase drag by 40%...There are two parts to the process: de-icing and anti-icing... "propylene glycol heated to around 140-150 degrees Fahrenheit and sprayed under pressure to blast off “contaminants.” "In colder weather and heavier snow or icing conditions, anti-icing [a preventative step] is also deployed after de-icing...anti-icing fluid is to prevent frozen or freezing precipitation or expected frost adhering to the aeroplane’s cleaned or de-iced surfaces...The fluid... is more viscous...[allowing] it to adhere to the aircraft surface for a longer period of time...A common misconception, Herrick said, is that anti-icing fluid will help the aircraft avoid icing at cruise altitude. In fact, the majority of it will have sloughed off during the takeoff roll, with all of it gone by the time the aircraft is 700 feet to 1,000 ft above the ground."
Imitating a dog nose helps sniff for chemicals
What happens in the NIST lab?
2:35 The rapid exhale-inhale sequence 5 times a second enhances the intake of odors and their detection; doing this in the fake nose extended its reach by a factor of 18.
9:36 we all emit a "human thermal plume" consisting of shedded skin cells
15:22 surveillance of a suspected drug manufacturing site - much safer to send in a drone, whose prop wash stirs up particles that are sensed indicating risk.
18:26 a video of coding with and withouta mask on
19:52 ""flow visualization" is a critical tool to understand what's happening."
This fake dog nose made chemical sensors 18x better
How anatomy is encoded in our cells
2:13 It's much more complicated than you think. In an experiment, they rearranged cells in an embryo, but cells found their path to the correct place to create a very normal looking frog. "All of the pieces move in novel paths to create a normal structure." 12:59 we would call this "collective intelligence."
Where is anatomy encoded in living systems
Fires spontaneously break out in a landfill in India
9:14 "every day, Americans throw out 8x as much garbage as the average Indian"
How people live on a flaming garage dump.
Histotripsy therapeutic ultrasound for tumors
Histotripsy -high energy ultrasound that destroys microscopic tumors particularly in the liver.
It also enhances the immune response to the tumor.
Could this new ultrasound change the way cancer is treated?
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