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Common time in a four-dimensional symmetry frameworkFollowing the ideas of Poincare, Reichenbach, and Grunbaum concerning the convention of setting up clock systems, clock systems and light propagation are analyzed within the framework of four-dimensional symmetry. It is possible to construct a new four-dimensional symmetry framework incorporating common time: observers in different inertial frames of reference use one and the same clock system, which is located in any one of the frames. Consequently, simultaneity has a meaning independent of position and independent of frame of reference. A further consequence is that the two-way speeds of light alone are isotropic in any frame. By the choice of clock system there will be one frame in which the one-way speed of light is isotropic. This frame can be arbitrarily chosen. The difference between one-way speeds and two-way speeds of light signals is considered in detail.
Document ID
19810030591
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hsu, J. P.
(Southeastern Massachusetts University North Dartmouth, Mass., United States)
Sherry, T. N.
(International Center for Theoretical Physics Trieste, Italy)
Date Acquired
August 11, 2013
Publication Date
February 1, 1980
Publication Information
Publication: Foundations of Physics
Volume: 10
Subject Category
Physics (General)
Accession Number
81A14995
Distribution Limits
Public
Copyright
Other

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