› added 6 years ago

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TIL that Three physicists flew around the world twice in 1971 with synced atomic clocks to test out the time dilation theory. Upon meeting up, they found that all 3 of the clocks disagreed with each other.

Read more hyperphysics.phy-astr.gsu.edu

via reddit.com

neEe7 TIL 11,000 women were breaking Nazi codes in America during WWII. Among them was Elizebeth Friedman who cracked at least 3 Enigma machines and dozens of different radio circuits to decipher more than 4,000 Nazi messages saving millions of lives. J. Edgar Hoover and the FBI took credit for it.
GY0RE TIL that Heather Graham was seriously considering doing softcore porn before being cast in Austin Powers: The Spy Who Shagged Me!
oRZE7 TIL: That Iceland is the safest country in the world in case of a nuclear war, because it is isolated from the rest of the world, doesn't have a standing army to target and generates all of its electricity from geothermal sources.
6EG4l TIL Actor Kal Penn raised over $800,000 for charity in the name of a guy who commented that Kal ‘doesn’t belong in America’
grV0b TIL that they're building robot spy animals with cameras in their eyes that can walk and move around to film documentaries from angles that would be impossible normally