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The question has no sensible answer: the Mach number is the speed of an object in a medium compared to the speed of sound in the same medium. Light, and other electromagnetic radiation travel fastest in vacuum. Since sound cannot travel in vacuum its speed in vacuum is 0 and so the Mach number for light requires division by zero - which is undefined.
The Mach number for light travelling in air is approx 873,300. In water, it is 202,000 and in diamond it is only 10,400.
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RossThe problem is that "Mach" is not very precisely defined; it means, how much faster something moves than the speed of sound. But the speed of sound varies a lot, depending on the material.The speed of light in air is approximately 350 meters/second (it can vary, depending on temperature and pressure); so you may want to use that as a reference. But the speed of sound in other materials is quite different from the speed of sound in air.
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How many mach are in the speed of light?
The speed of light in vacuum is about 874 thousand timesthe speed of sound at sea level.
What does Mach 2 look like at the speed of light?
Like a very, very, very slow thing. Mach 2 (in air at sea level) is approximately 2 millionths of the speed of light.
Is the speed of light faster than mach 10?
Very much so.
The ratio of speed of a body to the speed of sound is called?
the Mach number
What is the speed of light in machs?
The speed of light in machs is approximately 880,991 times the speed of sound in air at sea level. This means that the speed of light is approximately 880,991 machs.
