vander Waals force

vander Waals force
van der Waals force n.
A weak attractive force between atoms or nonpolar molecules caused by a temporary change in dipole moment arising from a brief shift of orbital electrons to one side of one atom or molecule, creating a similar shift in adjacent atoms or molecules.
  [After Johannes Diderikvan der Waals (1837-1923), Dutch physicist.]

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Universalium. 2010.

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