Convert Mach (SI standard) to Velocity of light in vacuum
Please provide values below to convert Mach (SI standard) [M (SI)] to Velocity of light in vacuum [c], or Convert Velocity of light in vacuum to Mach (SI standard).
How to Convert Mach (Si Standard) to Velocity Of Light In Vacuum
1 M (SI) = 9.84681209024945e-07 c
Example: convert 15 M (SI) to c:
15 M (SI) = 15 × 9.84681209024945e-07 c = 1.47702181353742e-05 c
Mach (Si Standard) to Velocity Of Light In Vacuum Conversion Table
| Mach (SI standard) | Velocity of light in vacuum |
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Mach (Si Standard)
The Mach number is a dimensionless unit representing the ratio of an object's speed to the speed of sound in the surrounding medium.
History/Origin
Named after the Austrian physicist Ernst Mach, the Mach number was introduced in the early 20th century to describe supersonic and hypersonic speeds, initially used in aerodynamics and fluid dynamics research.
Current Use
The Mach number is widely used in aeronautics and astronautics to specify aircraft and spacecraft speeds relative to the local speed of sound, especially in high-speed flight regimes.
Velocity Of Light In Vacuum
The velocity of light in vacuum, denoted by the symbol c, is the constant speed at which electromagnetic waves propagate through empty space, approximately 299,792,458 meters per second.
History/Origin
The concept of the speed of light has been studied since the 17th century, with significant contributions from scientists like Ole Rømer, who first estimated its finite speed in 1676, and Albert Michelson, who refined measurements in the late 19th and early 20th centuries. The value of c was precisely defined in 1983 by the International System of Units (SI).
Current Use
The speed of light in vacuum is a fundamental constant used in physics, astronomy, and engineering. It underpins theories of relativity, defines the meter in the SI system, and is essential for calculations involving electromagnetic radiation and high-speed phenomena.