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TIL The 1936 Nobel Prize for Physics went to Carl D. Anderson for the discovery of the positron. While a graduate student at Caltech in 1930, Chung-Yao Chao was the first to experimentally identify positrons through electron–positron annihilation, but did not realize what they were

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69NlJ TIL in 1993, Czechoslovakia split into two countries, Czech Republic and Slovakia. It was the only (mostly) non-violent split of an ex-Eastern Bloc nation. So peaceful it was called the "Velvet Divorce"
9LRQ TIL Samurais had the right to kill anyone who offended them with one blow but only immediately after offense and had to have witness to prove offense happened.
dERr TIL Dr. Oz has been the recipient of the “Pigasus Award for Refusal to Face Reality” at least three times, and has also been supportive of faith healing and communication with the dead.
0PZL TIL the iconic bassline from The White Stripes ‘Seven Nation Army’ isn’t a bass guitar. It’s a normal guitar shifted down an octave by an effects pedal
D1Nar TIL in the 1910s there were cases of people using the postal service to mail their children across long distances because postage was cheaper than a train ticket