In comparison to a vacuum, the speed of light in glass is 1.52 times slower.
To find the answer, we need to know more about the refractive index.
How the average speed of light in glass compared with that in vacuum?
- Where n is the medium's refractive index, which is a constant value greater than 1.0, and c is the speed of light in a vacuum, we may calculate the speed of light in any medium.
- We can infer from the formula that light slows down as it passes through a material.
- Particularly, the index of refraction for glass is n = 1.52.
This implies that the speed of light is 1.52 times slower in glass than in a vacuum.
Learn more about the refractive index here:
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