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Flashcards in Refraction and diffraction Deck (4)
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1
Q

Refraction

A

When a waves crosses a boundary between two materials it changes speed. If the waves hits the boundary at angle, the waves become refracted.

2
Q

How does refraction work?

A

The waves bends towards the normal if it slows down. It bends away from the normal if it speeds up. The wavelength changes, but the frequency stays the same.

3
Q

Angle of incidence

A

The angle between the incident ray and the normal.

4
Q

Diffraction

A

Is the spreading of waves when they pass trough a gap. Waves spread out without changing their speed, wavelength or their frequency. The narrower the gap is, the more the waves spread.