Foundations of Physics Letters

, Volume 16, Issue 6, pp 593–604 | Cite as

Universal One-Way Light Speed from a Universal Light Speed Over Closed Paths

  • Ettore Minguzzi
  • Alan Macdonald
Article

Abstract

This paper gives two complete and elementary proofs that if the speed of light over closed paths has a universal value c, then it is possible to synchronize clocks in such a way that the one-way speed of light is c. The first proof is an elementary version of a recent proof. The second provides high precision experimental evidence that it is possible to synchronize clocks in such a way that the one-way speed of light has a universal value. We also discuss an old incomplete proof by Weyl which is important from an historical perspective.

special relativity simultaneity clock synchronization one-way light speed round-trip axiom 

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Copyright information

© Plenum Publishing Corporation 2003

Authors and Affiliations

  • Ettore Minguzzi
    • 1
  • Alan Macdonald
    • 2
  1. 1.Dipartimento di FisicaUniversità di Milano-BicoccaMilanoItaly
  2. 2.Department of MathematicsLuther CollegeDecorah

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