› added 4 years ago

75

TIL "URL" means "Uniform Resource Locator"

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KOBX6 TIL that in order for a tesla coil to generate long arcs the previous arc ionizes the air and then the second arc (which is fired faster than the first can dissipate) jumps through the first arc, affectively doubling the arc length.
Y1k7 TIL that in Indiana Jones and The Last Crusade, even the rats were insured - the insurer wanted to know the minimum number of rats and a policy was written with “1,000 rats deductible”
JPPV TIL China is building a car-free city from scratch for 80,000 residents - it “will use 48% less energy and 58% less water than a more conventional city of the same size; it will also produce 89% less landfill waste and generate 60% less carbon dioxide.”
wBvY TIL a scientist at the University of Florida, USA, grew a “living ‘brain’” – “a network of 25,000 rat brain cells” – that when “connected to an array of 60 electrodes that can interact with a computer” learned to fly a simulated F-22 stealth fighter jet in a range of weather conditions.
9Wp6 TIL that children will regrow the tip of their finger if it is cut off