refractive index
The refractive index of any substance is(speed of light in vacuum)/(speed of light in that substance) .The number is greater than ' 1 ' in any material medium.
In any substance, all electromagnetic waves travel at the same speed that light travels through that substance.
The speed of light is not limited in a vacuum - the speed of light is fastest in a vacuum. But that is what Einstein called the "Cosmic Speed Limit" - nothing can move faster than the speed of light in a vacuum, or even quite asfast.
If both of them are in the same substance, then their speeds are equal.
About 2/3 its speed in a vacuum.
The index of refraction of a substance is(The speed of light in vacuum) divided by (the speed of light in the substance) .
The substance's index of refraction isSpeed of light in vacuum / Speed of light in the substance
Refractive index is a physicsâ?? measurement used to figure out the bend length a ray of light takes when passing through objects.
well... i think that light has a fixed speed (my assumption) 299,792,458 meters per second in a vacuum. But how to calculate the speed of anything is speed = distance/ time To calculate he speed of light you need to know the refractive index (RI) of the medium through which it is travelling. As stated above light has a constant speed in a vacuum, this speed is attenuated by the refractive index of the given medium c/RI
It's the speed of light in vacuum divided by the speed of light in that medium.
The refractive index of any substance is(speed of light in vacuum)/(speed of light in that substance) .The number is greater than ' 1 ' in any material medium.
If the substance has an index of refraction of 4/3, then the speed of light in it is 3/4 (75%) of the speed of light in vacuum, or about 225,000 km/sec.
In any substance, all electromagnetic waves travel at the same speed that light travels through that substance.
The refractive index or index of refraction of a substance is a measure of the speed of light in that substance. It is expressed as a ratio of the speed of light in vacuum relative to that in the considered medium.A simple, mathematical description of refractive index is as follows:n = velocity of light in a vacuum / velocity of light in mediumHence, the refractive index of water is 1.33, meaning that light travels 1.33 times as fast in a vacuum as it does in water.
It REFRACTS light. n=c/v Where n is the refractive index, c is the speed of light in vacuum and v is the speed of light in the substance.
The speed of light in a vacuum is 300,000 kilometers per second - you don't need an equation for that. Two equations that involve the speed of light are: 1) Speed = wavelength x frequency (this equation applies to any wave, not just light) 2) Snell's law, which relates the speed of light in different substances with the substance's index of refraction. The equation for the speed of light is: c = (299,792,458 meters per second) divided by (refractive index of the medium) The refractive index of vacuum is precisely 1 .
The speed of light is not limited in a vacuum - the speed of light is fastest in a vacuum. But that is what Einstein called the "Cosmic Speed Limit" - nothing can move faster than the speed of light in a vacuum, or even quite asfast.