This is a picture I took of my reflection in a mirror.  Today, I learned something really cool about full-length mirrors.  I thought at first that in order to see my whole reflection in the mirror, the mirror needed to be as tall as me.  However,  I now realize that the mirror only has to be half of my height.  As long as the mirror is positioned at the height of my eyes, I will be able to look up and see my face and look down and see my feet.  This is because the normal for the angle of incidence required to look at my feet is only at my waist.  The bottom half of the mirror would only show the floor.