To clarify my wife is extremely smart but doesn’t get mirrors. She thinks if we are looking at each other from just the right angle that she could see me but I won’t see her. I explained that if I am looking at your eyes then you can guaranteed see mine. I have tried to explain it in a million different ways but am having no luck. Please help.
Edit: Some great answers but I have already tried similar examples. I literally used a laser pointer but she still believes she could find the exact right angle where she can see me but I can’t see her…maybe she is doomed to just never get it. To clarify things she is a trained financial planner than can do some crazy math in her head but this baffles her.
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Light reflects off of the surface of the mirror at the same angle in both directions, and your eye perceives the light which falls on it. Taken together, those things mean that if the light from your eyes can travel on a path to hers, the light from hers will travel back on the same path to yours, and you will see her. Technically she’s correct though – it’s not a guarantee because she might be, y’know, blind.
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