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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

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14y ago
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12y ago

The index of refraction of a substance describes the speed of light in that substance,

as a ratio of the speed of light in vacuum to its speed in that substance.

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Q: What does the index of refraction best describe?
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Related questions

What is used to describe how the medium reflects light?

Index of refraction


What is used to describe how medium reflects light?

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What is the bending of light rays as it passes from one material into another?

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Q: How do you think increasing a medium's index of refraction might affect the angle of refraction?


When light passes from a medium with a high index of refraction into a medium with a lower index of refraction which direction does the light bend?

A medium with a higher index of refraction, like diamond, is more dense than the medium with a lower index of refraction, like air. If the ray of light is moving from the less dense medium (lower index of refraction), to a more dense (higher index of refraction) the ray of light bends TOWARDS the normal.


How is the refractive index of glass is to water is related with that of air is to water?

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

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well kids, the answer is INDEX OF REFRACTION. (: science question on my homework


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Which best describes a material with a low index of refraction near 1?

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