name
Mach
mahk
name
1
A surname of Austrian physicist Ernst Mach, after whom the unit of speed relative to the speed of sound is named.
"Ernst Mach studied shock waves and the physics of sound."
n
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A unit of speed equal to the speed of sound in a given medium, used especially of aircraft.
"The jet broke the sound barrier, flying at Mach 2."
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Ernst _____ studied shock waves and the physics of sound.
Etymology
Named after Austrian physicist and philosopher Ernst Mach (1838-1916).