Why do mirrors flip left and right, but not up and down?

Why do mirrors flip left and right, but not up and down?

Mirrors don’t actually flip left and right. They reverse front and back. We perceive a left-right flip because we mentally rotate the reflection as if facing ourselves, not because the mirror changes directions.

Why It Matters

This fact belongs to the general category and contributes to expanding general knowledge. Understanding such facts not only makes you smarter but also helps connect ideas across different fields.

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