![]() ![]() This can be easily seen by tracing the rays from significant points on the object and seeing where they end up in the mirror image. For a three-dimensional object standing in front of the mirror, there is an image of the object created behind the mirror with the right side still on the right, the left side still on the left, the top side still on the top, the bottom side still on the bottom, but the front side is flipped to the back and the back side is flipped to the front. Mirrors reflect light rays such that the angle of reflection equals the angle of incidence. ![]() ![]() ![]() Public Domain Image, source: Christopher S. If mirrors truly flipped left to right, then the green and blue parts of the box would be exchanged in the mirror image, which is clearly not the case. Tracing a few representative light rays from their reflection point on the mirror back to their image point reveals that a mirror preserves the position of the sides but exchanges front and back positions. Here we are looking down on a colored box on a white rug in front of a mirror. ![]()
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