No matter who you are and where you are from, at some point in your life you must have wondered why the mirror flips everything horizontally. While we are at it, why does it merely flip things horizontally and not vertically instead? What’s the science behind all that, one wonders.

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Vlogger Physics Girl attempts to simplify it for those who are still all at sea about the concept. She explains that the person standing infront of the mirror is actually presenting the image backwards. They tend to flip them horizontally instead of vertically. For instance, the word ‘desserts’ written on a paper would still read that if it was flipped vertically. Though, it would show upside down instead.