› added 7 years ago

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SciShow Space takes you into Low Earth Orbit to explain how artificial satellites get up there and stay there -- at least for a while.

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4DKg TIL that one of the B-29s that escorted the Enola Gay into Japan was called ‘Necessary Evil’.
9w7kG TIL that during WWII, U.S. Navy cryptanalysts, led by Joseph Rochefort, tricked Japan into revealing their plans to attack Midway. By sending a fake uncoded message about a water shortage, they confirmed "AF" was Midway, allowing the U.S. to prepare and win the battle.
nNGo TIL that Leonardo DaVinci used to buy caged animals at the market just to set them free.
MeOvm TIL of Harlon Block, a marine who raised the flag on Iwo Jima but then died soon after. He was misidentified in the famous picture for 2 years but his mother knew it was him. Looking at the photo she exclaimed “I’ve changed so many diapers on that boy’s butt, I know it’s my boy"
OoNGe Today I learned that the Or logic gate is essentially the And logic gate