Why Do Mirrors Flip Left and Right?

Imagine you're facing a mirror, and it shows your face. You might think the mirror flipped your left side to the right, but really, it's just showing you exactly as you are, head-on. If you raise your right hand, the mirror shows your right hand, not your left. The trick is that mirrors flip things front to back, not left to right. It’s like looking at a picture from the front instead of the back, the side that faces you stays the same, but what was behind flips over.

Take the quiz →

Examples

  1. If you stand in front of a mirror and raise your right hand, the reflection shows your right hand.
  2. A cat walking toward a mirror appears to walk forward, not backward, even though it's reflected.
  3. When you wave goodbye to someone in the mirror, it looks like you're waving hello to yourself.

Ask a question

See also

Discussion

Recent activity