The strength of these forces is proportional to the negative sixth power of distance.
These forces can cause a type of spectral line broadening that can be described by a Lévy distribution. Langbein developed an "exact" representation for these forces based on a macroscopic theory put forth by Lipschitz, which accounts for retardation and many-body interactions. Pairwise addition is used to calculate the strength of these forces between spherical bodies in a method developed by H. C. Hamaker. One possible explanation of the Casimir effect is that it arises from these interactions between parallel uncharged conducting plates, and these interactions account for the attractive term in the LennardJones potential. One type of these anisotropic forces is named for Keesom, and another kind named for Debye occurs between a permanent dipole and an induced dipole. The strength of these forces is proportional to the negative sixth power of distance. Another type of these forces occurs between instantaneous dipoles and is called London dispersion forces. For 10 points, name this class of weak intermolecular forces named for a Dutch chemist.
These forces can cause a type of spectral line broadening that can be described by a Lévy distribution.
van der Waals forces