Why Do Paintings Come to Life in the Dark?

Paintings come to life when it's dark because of the way light works. Imagine you're drawing with crayons on paper: if you color one side very dark and leave the other very light, it looks flat in bright light, but when the lights go out, the light parts glow, making your picture look like a magic scene with shadows and highlights.

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Examples

  1. A picture of a cat in a dark room looks like it's glowing when you turn off the lights.
  2. Drawing a sun on a piece of paper becomes more magical when you shine a flashlight over it at night.
  3. Your shadow on the wall appears to move when you flicker a light.

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