Coulomb or Coulombs may refer to:
- Charles-Augustin de Coulomb (1736–1806), French physicist, also:
- Coulomb, a unit of electric charge
- Coulomb's law, in electrostatics
- Coulomb blockade, an increased resistance of certain electronic devices
- Coulomb barrier, the energy barrier that two nuclei need to overcome to undergo nuclear fusion
- Coulomb collision, a collision between two particles when the force between them is given by Coulomb's law
- Coulomb damping, a type of constant mechanical damping
- Coulomb friction, a friction model which is not proportional to velocity and depends only on the direction of movement
- Coulomb operator, a quantum mechanical operator used in quantum chemistry
- Coulomb stress transfer, an interaction criterion important in the study of earthquakes
- Mohr-Coulomb theory, a mathematical model describing the response of certain materials to stresses
- Coulomb (crater), a lunar crater
- Coulomb Affair, a conflict between Emma and Alexis Coulomb and Blavatsky and the Theosophical Society
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