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October 13, 2020 03:00 PM EST - October 13, 2020 04:00 PM EST

Why Can’t We Walk Through Walls?

If we only consider the volume of the electrons, protons, and neutrons in your body, then your entire mass would be about the size of a small sugar cube. Your body is mostly empty space. However, everything about you seems pretty solid. When you lean against a wall, you don’t fall through the wall. Why can’t you walk through walls? We’ll explore this surprisingly complex question that crosses both chemistry and physics. 

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