Why Can’t We See Through Walls?

Imagine you're in a room with a wall. Light comes from the outside, bounces off things like trees or people, and goes into your eyes. But when light hits a wall, it usually bounces back, not passes through, so all you see is the wall itself. That’s why you can’t look through walls like they’re made of glass.

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Examples

  1. You see your reflection in the mirror because it reflects light back to you.
  2. Light from a lamp passes through a clear glass window but not through a brick wall.
  3. Your friend can't see you if you're behind a thick wall.

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Categories: Physics · optics· light· waves· vision