Light on light: A response to Grøn [Book Review]
Foundations of Physics 11 (7-8):633-644 (1981)
AbstractEinstein's second postulate (light-speed constancy) is modified in the following manner:(1) as to motion of light emitters, no modification is made;(2) as to motion of light absorbers, if the absorber moves with velocityv with respect to the observer, that observer will attribute to light the velocity (c+v). It is shown, with reference to the original Einstein train example, that such a modification of the second postulate restores to kinematics a concept of distant simultaneity. Thus is indicated the complicated (acausal) behavior that must be attributed to light in order that the simple behavior earlier attributed (1) to matter (nonoccurrence of the Lorentz contraction) may be consistent with all known facts. A reply is made to Grøn's critique (2) of the earlier paper on metric standards. It is concluded that further experimental data are needed to decide the simple-light-complicated-matter versus complicated-light-simple-matter issue
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Special-relativistic resolution of Ehrenfest's paradox: Comments on some recent statements by T. E. Phipps, Jr.Ø Grøn - 1981 - Foundations of Physics 11 (7-8):623-631.