Earnshaw's theorem

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A fundamental result concerning bodies that interact according to inverse square laws, such as Coulomb's law of electrostatics and Newton's law of gravitation. It states that a system consisting of such bodies cannot be in stable static equilibrium. The Reverend Samuel Earnshaw (1805–1888) proved this result in 1842. Earnshaw's theorem means that neither a planetary system nor an atom can be composed of static bodies.

Subjects: Chemistry — Physics.

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