Light

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What are pigments?

Waves from the sun are what type of waves?

Different colors of light that can be seen are known as the

Waves that move perpendicular to the direction of matter are called

The distance from crest to crest or trough to trough is the

Any surface that reflects light to form an image of an object is what?

The distance a wave travels in one second is known as its

The number of waves that pass a point in one second is the