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well... i think that light has a fixed speed (my assumption) 299,792,458 meters per second in a vacuum. But how to calculate the speed of anything is speed = distance/ time

To calculate he speed of light you need to know the refractive index (RI) of the medium through which it is travelling. As stated above light has a constant speed in a vacuum, this speed is attenuated by the refractive index of the given medium

c/RI

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14y ago
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10y ago

The speed of light in a substance is '1' divided by the square root of [ (electrostatic permittivity of the substance the light is moving in)

times

(magnetic permeability of the substance the light is moving in) ].

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13y ago

Maxwell's Equations

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Q: What formula use to get the speed of light?
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