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TIL Leon Theremin invented the Rhythmicon, the world’s first drum-machine. Today is his birthday.

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5brr TIL Washington Post’s movie critic said Groundhog Day would “never be designated a national film treasure by the Library of Congress.” In 2006, the film was designated a national film treasure by the Library of Congress.
M7QMb TIL the oldest known Earth rock was not discovered on Earth, but was a meteorite found on the moon
9YEWr TIL that 50% of Roger Federer's name is "er"
79Kx TIL King Amanullah Khan of Afghanistan (1919-1929) once gave a public speech in which he said “Islam did not require women to cover their bodies or wear any special kind of veil”. At the conclusion of the speech, Queen Soraya tore off her veil (hejab) in public.
VwJ8 TIL Paralyzed Writer Jean-Dominique Bauby developed a method of communication based around blinking just his one working eyelid. his final book, about 140 pages long, took Bauby an estimated 200,000 blinks to complete. The book ‘The Diving Bell and the Butterfly’ was a critically acclaimed hit.