Lehmkuhl, Dennis (2019) The Equivalence Principle(s). [Preprint]
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Abstract
I discuss the relationship between different versions of the equivalence principle in general relativity, among them Einstein's equivalence principle, the weak equivalence principle, and the strong equivalence principle. I show that Einstein's version of the equivalence principle is intimately linked to his idea that in GR gravity and inertia are unified to a single field, quite like the electric and magnetic field had been unified in special relativistic electrodynamics. At the same time, what is now often called the strong equivalence principle, related to the local validity of special relativity, can also be found in Einstein's writings, albeit by a different name and clearly separated from what he calls the equivalence principle. I discuss both the development of Einstein's thoughts on the different versions of the equivalence principle, their relationship to the relativity principle, as well as later reflections and variants proposed.
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| Item Type: | Preprint | ||||||
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| Keywords: | General Relativity, Einstein, Equivalence Principle, Gravity, Unification, Laue, Synge | ||||||
| Subjects: | General Issues > Scientific Metaphysics Specific Sciences > Physics > Fields and Particles General Issues > History of Science Case Studies Specific Sciences > Physics > Relativity Theory |
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| Depositing User: | Dr Dennis Lehmkuhl | ||||||
| Date Deposited: | 12 Aug 2020 02:15 | ||||||
| Last Modified: | 12 Aug 2020 02:15 | ||||||
| Item ID: | 17709 | ||||||
| Subjects: | General Issues > Scientific Metaphysics Specific Sciences > Physics > Fields and Particles General Issues > History of Science Case Studies Specific Sciences > Physics > Relativity Theory |
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| Date: | 2019 | ||||||
| URI: | https://philsci-archive.pitt.edu/id/eprint/17709 |
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