mach ( synonym found)

Definition of mach:

°Ernst Mach, Austrian physicist 1838 - 1916.
°a ratio of the speed (of an object, etc.) to the speed of sound in the fluid or other medium through which the object travels. Usually used to describe supersonic speeds.

Definition of mach:

°Ernst Mach, Austrian physicist 1838 - 1916.
°a ratio of the speed (of an object, etc.) to the speed of sound in the fluid or other medium through which the object travels. Usually used to describe supersonic speeds.

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