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Q: The index of refraction is the ratio of the speed of light?
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What is the index of refraction?

The refractive index is the ratio of the speed of light in a vacuum to the speed of light in a medium.


Ratio of the speed of light in a vacuum to the speed of light in a material?

The index of refraction.


How is the index of refraction of a substance related to the speed of light in the substance?

The substance's index of refraction isSpeed of light in vacuum / Speed of light in the substance


The ratio of the speed of light in a medium to the speed of light in a vacuum is called its?

It is usually expressed the other way: the ratio of the speed of light in a vacuum to the speed of light in a medium. In that case, it is called the "index of refraction".


If the speed of light in a vacuum is 1.2 times that of the speed of light in a given material what is the index of refraction for that material?

2 (no units)


What is a material's index of refraction?

It is the ratio between the speed of light in a vacuum, and the speed of light in the material. The angle at which light is refracted is related to the index of refraction, and can be calculated using Snell's Law.


What does the index of refraction best describe?

Refractive index is the ratio of speed in a vacumme as to speed of light in a medium. The slowest speed of light is attain by use extremely cold sodium atom as light medium and it is succeed to slow down the speed of light from 186,000 Mile/second to 38 Mile/hr (300,000,000 m/s -> 17 m/s). This account to refractive index of 17,621,000


How is the index of refraction of a medium related to the speed light of in the medium?

c divided by the index of refraction of the medium = the speed of light in the medium.


How is the index of refraction of s medium related to the speed of light inThe medium?

The index of refraction of a substance is(The speed of light in vacuum) divided by (the speed of light in the substance) .


What is the index of refraction used to measure?

The index of refraction is a unitless ratio. It has no units, it is a pure number.


When the mineral uvarovite has an index of refraction of 1.86. calculate the speed of light in this sample of uvarovite?

Use the definition of "index of refraction". In this case, you simply need to divide the speed of light in a vacuum by the index of refraction.


If the index of refraction of a medium is 1.4 determine the speed of light in that medium?

Speed of light in air (which has an index of refraction of 1) is 3 * 10^8 m/s. So divide the speed of light by the index of refraction of the new medium to obtain the speed of light in that medium. Hope I helped!!