Mach number

From TCS Wiki
Revision as of 14:50, 28 February 2015 by 109.77.91.54 (talk)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

A mach number is a number that describes speed. It is a measure of the speed of an object compared to the speed of sound. Mach number is given as a percentage compared to the local speed of sound. For example, half the speed of sound = Mach 0.5.

[math]\displaystyle{ M=v/a }[/math]

Where v is the speed of the object, and a is the speed of sound.

It is named after the Austrian physicist Ernst Mach. When writing a speed as a Mach number, the number comes after "Mach." Template:Math-stub

Retrieved from "https://tcs.nju.edu.cn/wiki/index.php?title=Mach_number&oldid=7687"