Physics, 15.12.2020 23:00, oomale

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

material, what i

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If the speed of light in a vacuum is twice that of the speed of light in a given material, what is...