nonrelativistic approximation

nonrelativistic approximation

[¦nän‚rel·ə·tə′vis·tik ə‚präk·sə′mā·shən]
(physics)
The approximation in which it is assumed that speeds of objects are small compared to the speed of light.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The nonrelativistic approximation can be obtained by using the well-known Foldy-Wouthuysen unitary transformation (FWUF) [45] and by neglecting the spin degree of freedom the nonrelativistic Hamiltonian is given as [25, 26]
The nonrelativistic approximation can be obtained by using the well-known Foldy-Wouthuysen unitary transformation (FWUF) [45], and neglecting the spin degree of freedom the nonrelativistic Hamiltonian is given as [59]
As we are interested in the energy region T ~ [T.sub.I], the final He state |[[PHI].sub.f]> (with one electron in continuum) can also be treated in the nonrelativistic approximation.