Do electrons lose mass due to revolving around nucleon?

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Discussion Overview

The discussion revolves around the question of whether electrons and nucleons lose mass due to the forces they exert while in a bound state, particularly focusing on the implications of energy conservation and relativistic effects in atomic systems.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • One participant questions whether the electron and nucleon lose mass due to the energies they exert while in a static state, suggesting that the electromagnetic force causes the electron to revolve around the nucleon.
  • Another participant asserts that forces do not 'cost' energy and claims that bound electrons do not lose mass, but rather gain relativistic mass due to increased momentum.
  • A different participant expresses confusion regarding thermodynamics, questioning if the increase in speed of an electron when approaching a proton violates energy conservation, and asks where the loss of energy occurs.
  • Another participant clarifies that the electron does not radiate energy when bound to a nucleon but does lose energy when transitioning to a lower energy state, providing specific energy values for the masses of the electron and proton and noting the mass difference when the electron is bound in a hydrogen atom.

Areas of Agreement / Disagreement

Participants express differing views on whether mass loss occurs due to binding forces, with some asserting that mass is conserved while others question the implications of energy conservation in the context of relativistic mass. The discussion remains unresolved with multiple competing views present.

Contextual Notes

There are unresolved assumptions regarding the definitions of mass in relativistic contexts and the implications of energy conservation in atomic systems. The discussion also touches on the role of zero-point energy in energy calculations, which may not be fully addressed.

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Does the nucleon and electron lose mass as a result of the energies they exert in a static state.
The electron constantly uses the electromagnetic force to keep it attracted to the nucleon causing it to revolve around the nucleon. So does it lose mass?

Similarly, does the nucleon lose mass through its use of the nuclear/electromagnetic forces?

Are quantum vibrations of the atoms calculated in it's energy balance?
 
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Forces don't work that way; it doesn't 'cost' energy to exert a force. Bound electrons don't lose mass. (Actually, they gain relativistic mass due to increased momentum)

Yes, zero-point vibrational energy is taken into account when calculating the total energy of a molecule.
 
This confuses me in regards to Thermodynamics. If an electron and proton are separate and they eventually float together. The electron experiences an increase in speed and thus relativistic mass, won't this be a violation of energy conservation? Where is the loss?
 
No, the electron does not radiate any energy when it is bound to a nucleon, but the electron loses energy in the form of radiating energy (a 912 Angstrom UV photon) when it falls into the bound ground state. For example, the electron and proton masses (times c2) are about 511 keV and 938 MeV respectively, but when the electron is bound to the proton in a hydrogen atom, the mass of the atom is about 13.6 eV lower than the sum of the electron and proton masses.

See

http://en.wikipedia.org/wiki/Lyman_series

Bob S
 

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