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TIL Mozart wrote a “mirror” duet for two violins. The second violin’s part is played by turning the sheet music upside down and using the same notes. I feel I should quit music now.

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d8jWr TIL of The Map That Named America. Martin Waldseemüller, the primary author of the 1507 map, used the term “America” for the fist time. In 1513, he had second thoughts on honoring Vespucci and used the term Terra Incognita (unknown land) instead of “America”.
5Yp4r TIL about Katie Bouman, a computer scientist who at the age of 29 led the development of an algorithm for imaging black holes known as Continuous High-resolution Image Reconstruction using Patch priors (CHIRP). In April 2019 the first ever image of a black hole was acquired.
VBJDQ TIL sexsomnia is a sleep disorder where people engage in sexual acts such as masturbating or initiating sex with others while asleep. They may make sexual noises or open their eyes, but they are completely unaware of their behavior once they wake up.
b9A4E TIL at least 165 people survived both the Hiroshima and Nagasaki bombings in Japan during WWII.
KYOn9 TIL after he was fired from his job as embassador, tortured and banished to his farm estate, N.Machiavelli would return home at night, change the dirty clothes he wore for field work and put on his ambassador outfit, just to study in his office, alone, due to how much he missed his job