Why is the speed of light absolute?

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SUMMARY

The forum discussion centers on the concept of the absolute speed of light as posited by Einstein's theory of special relativity. Participants explore the philosophical and physical implications of this postulate, questioning why light's speed is unique compared to other speeds. Key points include the Lorentz symmetry as an experimental fact, the historical context of Einstein's postulates from 1905, and the distinction between light and other forms of energy. The conversation also touches on the need for a deeper understanding of why the speed of light is frame-independent, with references to vacuum permittivity and various academic papers.

PREREQUISITES
  • Understanding of Einstein's special relativity (1905)
  • Familiarity with Lorentz symmetry and invariance
  • Basic knowledge of vacuum permittivity and its role in physics
  • Awareness of the Michelson-Morley experiment and its significance
NEXT STEPS
  • Research the implications of Lorentz invariance in modern physics
  • Study the role of vacuum permittivity in determining the speed of light
  • Examine alternative theories to special relativity that address frame independence
  • Explore non-mathematical explanations of special relativity concepts
USEFUL FOR

Physicists, students of relativity, philosophers of science, and anyone interested in the foundational principles of modern physics.

  • #31
SinghRP said:
Sorry, I couldn't read the whole thing. But...
It would be more constructive if you would read the previous posts before posting.
 

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