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Photo of a magnifying glass

Fis forFocal point

A focal point is where rays of light converge into a single point. The glass inside a magnifying glass is curved so that it bends all the light that goes through it towards a central point. If you move a magnifying glass up and down in the sun, you will find that at a particular distance away the magnifying glass makes a pinpoint of light that is hot enough to set something on fire. This is called the focal point.

Focal point rhymes with ...

Disappoint, Disjoint, Point, Joint, Appoint ... see all