Beams of light

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Q1: What name do we use to talk about the shape of the light from a car headlight or a torch?

[Answer]

Street lamps send out light in every direction. As a result, they don't light anything very brightly.

To light something brightly we need to send all of the light in one direction.

When light goes in one direction we call it a beam of light.

A beam of light has sharp edges.