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Local versus Global Time in Early Relativity Theory.

Dennis Dieks1

  • 1History and Philosophy of Science, Utrecht University, 3584 CC Utrecht, The Netherlands.

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|July 26, 2024
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Summary

This study defends Einstein's use of global time and gravitational redshift derivations, arguing his early work clarifies and validates his later reasoning, contrary to modern criticisms.

Keywords:
coordinate time and proper timegravitational redshiftprinciple of equivalencetime and gravity

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Area of Science:

  • Theoretical Physics
  • Relativity

Background:

  • Einstein's 1905 special relativity introduced global time and distant simultaneity.
  • General relativity requires accounting for time in gravity and accelerated frames.

Purpose of the Study:

  • To defend Einstein's use of global time and gravitational redshift derivations.
  • To demonstrate the consistency and validity of Einstein's reasoning.

Main Methods:

  • Analysis of Einstein's early work on special and general relativity.
  • Examination of his reasoning patterns in 1916 and later writings.

Main Results:

  • Einstein's early work provides context for his later, criticized arguments.
  • The study clarifies and validates Einstein's derivations of the gravitational redshift formula.

Conclusions:

  • Einstein's use of global time in general relativity is consistent and valid.
  • Modern criticisms of his reasoning are addressed and refuted within the context of his early work.