Mach Number


Mach Number is the ratio of the speed of an object (such as an aircraft) to the speed of sound in the surrounding medium (such as air). It is a dimensionless quantity that is used to describe the speed of an object in a fluid environment, especially in aviation. Mach number is an important parameter in aviation because it determines the onset of compressibility effects, such as shock waves and changes in air density, which can affect the performance and handling of an aircraft. Mach number is named after Austrian physicist and philosopher Ernst Mach, who was one of the first scientists to study supersonic motion.


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