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单词 Earnshaw’s theorem
释义
Earnshaw’s theorem

Physics
  • 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 (1805–88) proved this result in 1842. Earnshaw’s theorem means that neither a planetary system nor an atom can be composed of static bodies.


Chemistry
  • The principle that a system of particles interacting via an inverse square law, such as Coulomb’s law of electrostatics, cannot exist in a state of static equilibrium. The Reverend Samuel Earnshaw (1805–88) proved this result in 1842. The theorem is of fundamental importance in chemistry since it shows that it is not possible to construct a correct model of atoms and molecules if the electrons are taken to be stationary.


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