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Lv 4
? asked in Science & MathematicsPhysics · 7 years ago

What would the refractive index of a material/medium need to be for lights to go flying at the speed of sound?

Could that material exist? With either the speed of light in air, or better, in that material?

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  • peterpan
    Lv 7
    7 years ago
    Favorite Answer

    v=c/n

    then

    n=c/v

    n=3x10^8/340=882,352.9

    it doesn't exist a material with such an index...

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