Natural Science Forum / Physics / Particle Physics / March 2005

Some of the GR transformations can be explained by two "frames of
reference".
An individual frame (self referenced) and a system frame (group
referenced).
In the case of an electron possessing stable motion within an atom;
it has motion referenced to itself, and it also has motion referenced
to other participants in the system (the other electrons possessing
stable motion and the nucleus of the atom).
Self referenced motion would include oscillation (SHO) and vibration
(as a rigid rotor).
Group referenced motion would include radial motion, orbital motion,
spin, and precession.
See;
  http://ca.geocities.com/chemgu­y777/index.htm
It combines frames of reference and quantum mechanics.