Tuesday, April 21, 2009

mirror

I was looking at myself in the mirror when I noticed that I could see my whole body in a mirror that was no more than three feet tall. Why could this occur? I could see my feet because the light rays from my feet reflect off of the mirror at the halfway point between my feet and my eyes. The light from the top of my head reflects off of the mirror where it is halfway between the top of my head and my eyes. By increasing the distance to the mirror, a smaller angle of reflection is required and therefore the mirror can be shorter in length.

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