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?
Answer Posted / riyaz
This one messes with your head a little. The trick is that left and right are relative to your body, where up and down are relative to the earth. To understand what I’m saying look at what’s on your left and then turn around. Now what’s on your left is actually the complete opposite. But if you do the same for what’s above you it doesn’t change. So the answer here is – it’s due to the definition of left and right and up and down.
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