Comment on Finding the Air CannonComments−gwern2yFun historical trivia: shortly after winning the Nobel Prize, Bragg https://en.wikipedia.org/wiki/Lawrence_Bragg#Work_on_sound_r... spent WWI working on exactly this problem https://en.wikipedia.org/wiki/Artillery_sound_ranging
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Fun historical trivia: shortly after winning the Nobel Prize, Bragg https://en.wikipedia.org/wiki/Lawrence_Bragg#Work_on_sound_r... spent WWI working on exactly this problem https://en.wikipedia.org/wiki/Artillery_sound_ranging