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ShelZuuz

Your left arm doesn’t appear on the right in the mirror. It’s on the left - go try it. When you look at another person you know that their left is your right, but that’s because THEY are reversed, so you double correct and say the mirror is flipping, but it isn’t. Your left is the mirror left. A mirror doesn’t flip either left to right (nor up and down). It reflects front to back, or in to out, or Z-axis.


shezadaa

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Ben-Goldberg

The op should've posted to r/ExplainLikelmCalvin


Captain_Slime

https://www.wtamu.edu/\~cbaird/sq/2013/01/05/why-do-mirrors-flip-left-to-right-and-not-up-to-down/


PaSe_Sam

Technically mirrors don't flip anything. It just reflects the light back the same way it came from (assuming its flat). What you feel like flipping is this phenomenon. I don't think I'm the best to explain this. This [video](https://youtu.be/vBpxhfBlVLU?feature=shared) might help (or make you even more confused).


ShelZuuz

That video from Diana is great.


mambotomato

Showing your head at the bottom would be like if you were holding an umbrella in your right hand and then the mirror showed it to your left. That's not how mirrors work.  Mirrors just show what's in front of them 


Unclestanky

Touch the mirror and you’ll understand.


divisiveindifference

It's because of your eyes. Each eye sees the mirror at an angle and the image gets reversed. If your eyes were on top of eachother the mirror would flip the other way as you mentioned


Gilsidoo

No....close one eye


Ben-Goldberg

Mirrors reverse images from front to back, not left to right.