Hoffman, Kenneth Paul
December 25, 2017
Special Relativity, Constant Speed of Light, Time Dilation, Inertial Reference Frames
The standard thought experiment used to validate the argument for time dilation is flawed. It is widely accepted in the physics of Special Relativity (SR) that the speed of light is a constant at speed ‘c’ even when one Inertial Reference Frame (IRF) observes another. Where there is no acceleration or gravity the velocity of light is the same for all IRFs regardless of the velocity of the IRF or the light source. That Postulate is used in the standard argument of physics to justify time dilation; if 'c' is constant time must be varying. However, Einstein never provided any proof for the establishment of this Special Relativity (SR) axiom or postulate that has become a foundation for the theories of physics. An alternative thought experiment given here shows that time cannot be varying and light speed must change in viewing another IRF in SR. The apparent speed of light would depend on the relationship between the reference frames. Also, this thought experiment shows that, contrary to what is currently accepted, observers who are in relative motion, could, in principle, synchronize their clocks.
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