What Makes a Shadow Look Like Itself?

Shadows are made when light is blocked, like a curtain blocking sunlight in a room. When the object that makes the shadow is shaped like its shadow, it looks like itself. Imagine holding up your hand, your shadow can look just like your hand because of how the light hits and blocks around it.

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Examples

Your hand casts a shadow that looks just like your hand on the ground during the day.
A lamp in your room creates a shadow of your head that looks exactly like it.
A big tree’s shadow on the wall looks like the tree itself.

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Categories: Physics · optics,light,shadows