Does light travel faster or slower when it has to pass through air or water

Question

Kristina Griffith

Physics

16 July, 11:03

Does light travel faster or slower when it has to pass through air or water

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Answers (2)

Know the Answer?

Ruthie · Answer 1

Light travels fast in air but i dont know about water

Rylee Richmond · Answer 2

light slower in water than in Air

Explanation:

Air's refractive index is about 1.0003, while water's is about 1.3. This means that light is "slower" in water than air. This is because it's more likely to hit a molecule and then get re-emitted, lengthening the amount of time the light takes to get through a certain distance of the medium.