8.1 INTRODUCTION
Plane mirrors are made from a piece of glass polished on one side. If one stands before a plane mirror, one sees an upright image of oneself as far “behind” the mirror as one’s position in front of it. All plane mirrors form an upright image equal to the height of the object placed in front them. If one raises one’s right hand, the mirror image raises its left hand. Lettering read in a plane mirror is reversed right to left as well. This is the reason why writing on emergency vehicles, such as ambulances and police cars, is reversed right to left. Thus, when a driver looks into the mirror of his car, the writing ...
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