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Perimeter Institute for Theoretical Physics
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How Can Atoms Exist?
Alice wonders how a tree can exist and therefore how atoms can exist. Bob suggest that in an atom, electrons orbit the nucleus of an atom like a planet orbits the Sun. Alice explains that if that the charged electron should give off light and lost energy and spiral into the nucleus. That leads them on to suggest that we need the ideas of quantum theory to explain how this does not happen.
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