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TIL that in 2014 researchers at MIT conducted a study that found participants were capable of extracting a picture's conceptual meaning after viewing it for as short as 13 ms, meaning the maximum framerate the human eye can see is about 77 frames per second.

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Wk6yo TIL that the Night's Watch cloaks from Game Of Thrones are made of 79$ Ikea rugs.
X0Gkk TIL: Michigan had a state-wide school contest to re-design their "I Voted" stickers
VMe18 TIL Karate changed it's spelling from 唐手 to 空手, changing it's meaning from "Chinese hand" to "empty hand" (both are pronounced karate). This was because of Japanese militarism, they wanted to conceal the fact that it developed under the influence of Chinese kung fu.
j64ga TIL the first antitoxin for botulism was harvested from the blood of a single horse, named First Flight, for 15 years until 1993.
nWed TIL a technique called “circular breathing” allowed a saxophone player to hold an E-flat for 45 minutes and 47 seconds.