Physical kohesion forces between molecules and atoms without forming a chemical binding.

Van-der-Waals-forces are attracting forces between:

  • Dipoles
  • Dipoles and polarized molecules which are induced dipols by the dipole effect of a polar molecule
  • Molecules which are non polar originally but poarize each other by mutual dipole induction.

The effect is designated according to netherland scientist Johann Diderik van der Waals (1837 - 1923)