Refraction (5 of 5) Index of Refraction, An Explanation

Describes the index of refraction and show how to calculate the index of refraction.

The index of refraction (n) of a material is a dimensionless number that describes how fast light travels through the material. It can be seen as the factor by which the speed and the wavelength of light are reduced with respect to their values in a vacuum.
The index of refraction is calculated as n = c / v. Where c is the speed of light in a vacuum (3.00 x 10^8 m/s) and v is the velocity of light in the material. For example, the index of refraction for water is 1.33, this means that travels slower in water then in a vacuum.

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[cristianosangiuliano]

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[spy_]

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[aldairzettewachenje]

So helpful thank you, no more blank spaces on my exam papers

[hitoribocchii]

Thank you, I have a question is it possible to calculate the velocity of light in an object using the object's density?

[cassiechan]

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[chinadionisio]

Thanks for this video it helps me a lot

[DhanaAbishek]

The lecture was simply awesome sir but could you explain some typical problems regarding the topic from your next lectures please. It'll be a lot helpful.

[maryamalmuhannadi]

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[SYGMAXZ]

Thank you very much mate I'm really thankful to u because I finally I understood this stupid refractive index

[georgemathew]

Absolute refractive index is always greater than one but relative refractive index can be greater than one or less than one

[vinnyg]

For saphire it's listed as 1.24 x 10^8 but 3/1.77 is 1.69. What am I missing?

[twilighthunter]

Could u help me with this....Why doesn't refracted light go normally....as it will be the shortest???Urgent...!!!