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Fran?ois Goy
local time: 2019-09-23 08:29 (+01:00 )
Fran?ois Goy (Abstracts)
Titles Abstracts Details
  • On the Sagnac Effect for Massive Particles and Some of its Eepistemological Consequences (2009) [Updated 2 years ago]

    The author shows in this article that a coherent description of
    the Sagnac effect for massive particles, which takes account of
    length contraction and time dilation can only be obtained with
    a so called ?absolute? clock synchronization parameter. Any
    other synchronization leads to an incoherent description
    between the point of view of an observer on the rotating
    platform and a non-rotating observer. This demonstration
    generalises the one made by Selleri and the author for the
    Sagnac effect with electromagnetic waves.

  • Time on a Rotating Platform (1997) [Updated 2 years ago]

    Traditional clock synchronisation on a rotating platform is shown to be incompatible with the experimentally established transformation of time. The latter transformation leads directly to solve this problem through noninvariant one-way speed of light. The conventionality of some features of relativity theory allows full compatibility with existing experimental evidence. 

  • On Synchronisation of Clocks in Free Fall Around a Central Body (1997) [Updated 8 years ago]

    The conventional nature of synchronisation is discussed in inertial frames, where it is found that theories using different synchronisations are experimentally equivalent to special relativity. On the other hand, in accelerated systems only a theory maintaining an absolute simultaneity is consistent with the natural behavior of clocks. The principle of equivalence is discussed, and it is found that any synchronisation can be used locally in a freely falling frame. Whatever the synchronisation chosen, the first derivatives of the metric tensor disapear and a geodesic is locally a straight line. But it is shown that only a synchronisation maintaining absolute simultaneity makes it possible to define time consistently on circular orbits of a Schwarzschild metric.