Introduction to Refraction

The video explains refraction, a phenomenon where light changes direction and speed when passing through different media. It describes how this causes illusions, like the straw appearing broken in water. The video covers phase velocity, the index of refraction, and how density affects light bending. It also explains how different colors of light refract at different angles, leading to a spectrum when passing through a prism.

What is refraction and how does it affect light waves?

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Explain the relationship between the index of refraction and the speed of light in different media.

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How does the density of a medium influence the bending of light?

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Describe how different colors of light are refracted at different angles.

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What happens to light when it passes through a triangular prism?

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