Incredible Speed Of Light In Air Compared To Water Ideas. Web the speed of light in air is very close to 300 000 000 m/s. Web give an expression to relate the absolute refractive index of a medium with speed of light in vacuum.

The speed of light in liquid is 225,000,000 meters per second (74,792,458 meters per second slower than c. Since the speed of light is always less than c c in matter and equals c c only in a vacuum, the index of refraction is always greater than or equal to one. Web however, the slowdown in air is very small compared to vacuum, and it's very similar between microwave and visible light.




