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Are there any well-known theories successfully unifying the inertial and gravitational mass?

You have to consider that both inertial and gravitational mass are the same because you are assuming that the body or the particle is going to behave under the accelerating process in the exact same ...
Ernesto Heine's user avatar
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Auto-parallel Transport or Principle of Extremum Action?

Short answer: yes. Auto-parallel. Why? Because ultimately, this is both an expression of the continuity equation for a singular source concentrated on a world-line, and the limit of the continuity ...
NinjaDarth's user avatar
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Can electrons or protons due to fusion reduce in their individual mass?

From https://physics.stackexchange.com/a/590575/186017: Mass is the energy in the rest frame of a system divided by c$^2$. In order to be useful as a concept, mass should be constant at the time and ...
my2cts's user avatar
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Can electrons or protons due to fusion reduce in their individual mass?

Your assumption is exactly what leads you to this incorrect conclusion. Einstein's $E=mc^2$ states that systems of particles gain/lose mass by means of gaining/losing energy. Meaning that the mass of ...
Ofek Gillon's user avatar
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