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TIL The recorder was a very serious instrument in the Renaissance, Baroque periods, and reached its zenith in the Baroque. But it was overcome by the needs of louder orchestras, and so the transverse flute [held sideways] became the instrument of choice

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6ELKm TIL In 2015, Hashima Island was added to the UNESCO WHC as part of the Meiji Revolution, but was also the site of Korean forced labor. Korea withdrew its opposition after Japan's promise to take measures to remember victims. Immediately after approval, the Japanese FM publicly denied forced labor.
m1ZlY TIL about the final episode of the TV show Howdy Doody. To save money the three different actors who played Clarabell the clown over the 13-year run were not allowed to speak, but communicated through mime and a horn. The series ended with Clarabell looking into the camera to say "Goodbye, kids."
8KP8 TIL Your reality is 15 seconds in the making: When you really focus your attention on something, you’re said to be “in the present moment.” But research suggests that the “present moment” is actually a chunk of the recent past, and it’s about 15 seconds long.
neXOP TIL Humans are bioluminescent and glow in the dark. The light is just too weak for human eyes to detect
QN97M TIL about the "Battle Of The Beams", a period in WW2 when the Luftwaffe used a number of increasingly accurate systems of radio navigation for night bombing, and the British fought back with a variety of their own increasingly effective means, involving jamming and deception signals.