Egotistic

Stand Mirror

by admin on January 14th, 2011

filed under Mirrors

Stand in front of mirror facing it.Why the mirror appears to reverse left and right, but not up and down?

Imagine you are standing in front of a mirror, facing it. Raise your left hand. Raise your right hand. Look at your reflection. When you raise your left hand your reflection raises what appears to be his right hand. But when you tilt your head up, your reflection does too, and does not appear to tilt his/her head down. Why is it that the mirror appears to reverse left and right, but not up and down?

Because the mirror is reflecting the point directly in-front of it. Your left hand is directly in-front of the right side of the mirror (from the mirror's perspective), your head is directly in-front of the upper part of the mirror, etc.

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