When one looks into a mirror, one see an image of himself....

When raising one's right hand, the image raises its left. When raising one's left, the image raises its right.

So, why is it that the mirror reverses left and right, but not top and bottom? Why does a mirror appear to invert the left-right directions, but not up-down?

To transport yourself exactly onto your reflection, you must only rotate around your spine, not in the perpendicular direction. That is why the mirror does not invert up and down.

Posted by Wally on 2004-03-16 20:00:29