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TIL After becoming deaf, Beethoven found that by connecting a metal rod to a piano and biting it, he could sense the instruments vibrations through his jawbone, enabling him to 'hear' his music

https://www.zmescience.com/feature-post/pieces/how-a-deaf-beethoven-discovered-bone-conduction-by-attaching-a-rod-to-his-piano-and-clenching-it-in-his-teeth/
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1ho7osx/til_after_becoming_deaf_beethoven_found_that_by/