› added 3 weeks ago

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TIL the U.S. FDA has an “acceptable” level of bug parts in ground coffee (and other foods) that is between 4–6%.

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via reddit.com

woKd6 TIL that Jesse Owens declared after the 1936 Olympic Games, that he was treated worse by the President of the USA, than he was by the German authorities.
Oor4R TIL that the weightless scenes in the movie Apollo 13 were real. The space capsule set was built inside a cargo plane that would freefall for about 20 seconds at a time, simulating being in orbit. The plane would then climb back up to film the next scene.
oY97 TIL The Rolls Royce Merlin V12 aviation engine created so much thrust from the exhaust, engineers were able to angle the exhaust backwards to gain 10 mph in the Spitfire it powered.
p8P0Z TIL - All steel produced after WW2 is contaminated with radionuclides from atomic bombs. "Low-backround steel" is steel made before or during WW2, and is needed for precise measuring and censor equipment, such as equipment for measuring radionuclides in steel.
WrpN TIL Strong light can cause some people to sneeze. Up to 35% of the population is affected by “Photic sneezing reflex” and science doesn’t know why