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Foundations of Physics

, Volume 19, Issue 12, pp 1525–1528 | Cite as

Response to Rodrigues and Rosa on the twin paradox

  • Mendel Sachs
Article

Abstract

This paper responds briefly to the criticism of Rodrigues and Rosa on my earlier analysis of the twin paradox. The main point that I have emphasized (and that the authors have not refuted, either logically or mathematically) is the error in directly identifying anabstract measure relative to a reference frame [and its transformations to all other possible reference frames in which the laws of nature are to be compared (such as temporal and spatial measures)], with aphysical extension and duration of a material body.

Keywords

Reference Frame Early Analysis Material Body Spatial Measure Twin Paradox 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    W. A. Rodrigues and M. A. F. Rosa,Found. Phys. 19, 705 (1989).Google Scholar
  2. 2.
    M. Sachs,Phys. Today 24, 23 (1971);Einstein Versus Bohr (Open Court, LaSalle, Illinois, 1988), Chap. 9.Google Scholar
  3. 3.
    M. Sachs,Found. Phys. 15, 977 (1985).Google Scholar
  4. 4.
    A. Einstein, “Autobiographical Notes,” inAlbert Einstein—Philosopher-Scientist, P. A. Schilpp, ed. (Open Court, LaSalle, Illinois, 1970), p. 59.Google Scholar
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    A. Einstein,Sidelights of Relativity (E. P. Dutton, New York, 1922; Dover, New York, 1985), p. 35.Google Scholar
  6. 6.
    A. Einstein, Ref. (4). “Google Scholar
  7. 7.
    M. Sachs,General Relativity and Matter (Reidel, Dordrecht, 1982), Chaps. 3 and 6.Google Scholar
  8. 8.
    J. Terrelet al., Phys. Today 25, 9 (1972).Google Scholar

Copyright information

© Plenum Publishing Corporation 1989

Authors and Affiliations

  • Mendel Sachs
    • 1
  1. 1.Department of Physics and AstronomyState University of New York at BuffaloBuffalo

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