refraction Flashcards
What do we call a substance or material that allows light to pass through it and give an example
A medium
Example : air , water , glass
Is an opaque substance a medium ?
No , it is not an optical medium
What happens to light when it passes at an angle from one medium into another
It bends
What is the bending of light called
Refraction
Why does light bend
It bends because it changes speed when it moves though materials the have different densities
What kind of material does light travel slower in ams what kind of materials does light travel faster in
Light travels slower in materials that are dense -glass
Light travels faster in materials that are less dense -air
State the law of refraction
When light passes from a less dense medium to a dense medium I bends towards the normal
When light passes from a dense medium to a les dense medium it beds away from the normal
