Is the electron mass strictly of electromagnetic origin ?
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Answer:
Electromagnetic mass was initially a concept of classical mechanics, denoting as to how much the electromagnetic field, or the self-energy, is contributing to the mass of charged particles. It was first derived by J. J. Thomson in 1881-later By mass-energy equivalence-this equivalence, Poincaré's radiation paradox was solved without using "compensating forces", because the mass of matter itself (not the non-electromagnetic aether fluid as suggested by Poincaré) is increased or diminished by the mass of electromagnetic energy in the course of the emission/absorption process. SELF ENERGY="effective" electromagnetic mass =mass–energy relation WHICH states that the universal proportionality factor between equivalent amounts of energy and mass is equal to the speed of light squared AND also serves to convert units of mass to units of energy, no matter what system of measurement units is used. THE mass–energy equivalence, combined with the Weak Equivalence Principle, results in the prediction that all forms of energy contribute to the gravitational field generated by an object. This observation is one of the pillars of the general theory of relativity-the Pound–Rebka experiment, was performed in 1960. In this test a beam of light was emitted from the top of a tower and detected at the bottom. The frequency of the light detected was higher than the light emitted. This result confirms that the energy of photons increases when they fall in the gravitational field of the Earth. The energy, and therefore the gravitational mass, of photons is proportional to their frequency as stated by the Planck's relation.The energy-momentum relation is consistent with the mass-energy relation. THE GRAVITATIONAL MASS IS AN EFFECT OF THE ELECTROMAGNETIC RADIATION. SO- MASS IS ELECTROMAGNETIC..AND IN ORIGIN TOO!