Refraction

Question 1

What’s refraction

Answer 1

When light goes through 1 medium then another

Question 2

How does the speed of light change through density

Answer 2

More dense slower
Less dense faster

Question 3

What’s index of refraction

Answer 3

Ratio of speed of light in a vacuum to speed of light in a medium

Question 4

Whats snells law

Answer 4

Angle between a way to calculate index of refraction without speed of light