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Friday 31st October 2014
Max 21°C | Min 15°C

Why aren't things upside down on a mirror?

Question

When you look in a mirror, the left becomes the right and vice versa. But the top never becomes the bottom. Why is that?
Martin, Enfield

Answer

Name: Mark, Lower Kingswood
Qualification: It’s a bit obvious!
Answer: The answer is it doesn’t reverse things left-to-right. The left-side of your face is shown on the left-hand side of the mirror, just as the top is at the top of the mirror. Or to put it simply, it’s because it’s a reflection!

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