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But why would light "slow down"? | Visualizing Feynman's lecture on the refractive index

3 3Blue1Brown Math & Science 28:33 7 views

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About this video

This video explains how a prism separates light into different colors. It shows how light slows down when it enters glass and how different colors of light slow down by different amounts. It uses fun animations to make learning about science easy!

#science#physics#light#prism

🧠 Quiz & Trivia

Test your knowledge after watching!

Q1 What is the name for the ratio between the speed of light in a vacuum and the speed inside a medium?

Answer: Index of refraction

Q2 What color of light slows down more when it enters glass?

Answer: Blue light

Q3 What law describes how much light bends when it passes from one medium to another?

Answer: Snell's Law

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