Why does a mirror only flip left and right but not high and low? (lemmy.world)

submitted 4 months ago* (last edited 4 months ago) by Zachariah@lemmy.world to c/asklemmy@lemmy.world

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edit: Thank you to all who answered! I’m amazed at how many ways you came up with to answer this.

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[-] theunknownmuncher@lemmy.world 16 points 4 months ago* (last edited 4 months ago)

The mirror DOESN'T flip left and right. Imagine an x-axis as a horizontal line across the mirror, a y-axis as a vertical line up/down the mirror, and a z-axis as a line that comes straight out of/into the mirror.

The mirror is actually only flipping that z-axis that comes out of/into the mirror, by reflecting the light back

this post was submitted on 26 Aug 2024

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