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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.
Wiki User
∙ 7y ago
Wiki User
∙ 7y agoThe 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.
What is the speed of light in machs?
if calculated it right it is mach 882352.94 at sea level
The ratio of speed of a body to the speed of sound is called?
the Mach number
Is mach 20 faster than light If not how much slower?
No, Mach 20 is not faster than the speed of light. The speed of light is approximately 299,792,458 meters per second in a vacuum, while Mach 20 is roughly 7.35 kilometers per second. Therefore, Mach 20 is significantly slower than the speed of light.
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.
When did Isaac Newton discover the speed of sound?
Newton was more into light. Ernst Mach was the sound guy. Mach being the speed of sound.
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.
Who is the fastest video game character?
In August 2008, Sonic the Hedgehog was officially titled the fastest videogame character of all time with a top speed of light speed (using light dash). Average speed varies between speed of sound and mach 3. Tops Mach 5.4 running. Mach 10 for homing attack.
Is the speed of light faster than mach 10?
Very much so.
What is the speed of light in machs?
if calculated it right it is mach 882352.94 at sea level
What is the Mach of Airbus A380?
Maximum speed: Mach 0.96Operating speed: Mach 0.89
How fast is Mach 1 Mach 2 Mach 3 Mach 4 etc to the fastest Mach level on record?
The mach number is the speed, compared to the speed of sound in air. Thus, mach 1 is the speed of sound, mach 2 is twice (2 times) the speed of sound, mach 3 is 3 times the speed of sound, etc.
What is mach in airplane testing?
The "Mach number" is the speed of the aircraft as a percentage of the speed of sound. So an aircraft going at Mach 0.74 is traveling at 74% of the speed of sound. (Mach 0.74 is a typical airliner speed.)
What is the next speed after mach?
Mach 2.
The ratio of speed of a body to the speed of sound is called?
the Mach number
