___ 1 (THE SPEED OF SOUND) Crossword Clue
___ 1 (THE SPEED OF SOUND) Crossword Clue
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Crossword Puzzle Infos
The term 'MACH' is an acronym for the speed of sound, which is the speed at which sound waves travel through a medium. It is named after Ernst Mach, an Austrian physicist and philosopher who studied the speed of sound in the late 19th century. The speed of sound varies depending on the medium it is traveling through, but in dry air at sea level it is approximately 343 meters per second.