What happens to electron wave as it travles to light speed

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Discussion Overview

The discussion centers on the behavior of electron waves as they approach the speed of light, particularly in relation to concepts of mass and wave properties. Participants explore theoretical implications and historical context surrounding wave-particle duality and quantum mechanics.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Historical

Main Points Raised

  • Some participants assert that electrons gain mass as they approach light speed, while others clarify that they gain energy instead.
  • There is a debate regarding the relevance of gravity and electromagnetism to the discussion of electron waves, with some arguing that these concepts are unrelated.
  • One participant notes that the de Broglie wavelength decreases with the inverse of momentum, referencing external sources for further reading.
  • Another participant challenges the validity of de Broglie's hypothesis in light of Dirac's transformation theory, suggesting that modern quantum mechanics does not rely on matter waves.
  • Concerns are raised about the historical context of quantum mechanics and the evolution of theories, indicating that earlier concepts may be viewed as outdated.

Areas of Agreement / Disagreement

Participants express differing views on the relationship between mass, energy, and wave behavior of electrons, indicating that multiple competing perspectives remain without consensus.

Contextual Notes

There are unresolved assumptions regarding the definitions of mass and energy in relativistic contexts, as well as the implications of wave-particle duality in modern physics. The discussion also reflects varying interpretations of historical developments in quantum mechanics.

1832vin
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everyone knows that if an electron travels close to light speed, they gain mass, but how about the wave side of things? since gravity and electromagnetism are 2 completely different things (is gravity and magnetism both waves?)

would the electron wave traveling close to light speed be not affected?
 
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1832vin said:
everyone knows that if an electron travels close to light speed, they gain mass
No they do not. They gain energy.

Decades ago there was a concept of relativistic mass which is simply energy divided by the speed of light squared, but this concept is not used any more.

1832vin said:
since gravity and electromagnetism are 2 completely different things
This has nothing to do with gravity or electromagnetism.
1832vin said:
(is gravity and magnetism both waves?)
They are both interactions, it does not make sense to ask if interactions are waves (incompatible categories: "is blue a road?").
1832vin said:
would the electron wave traveling close to light speed be not affected?
Affected by what?
 
Khashishi said:
The de Broglie wavelength decreases with the inverse of momentum.
http://en.wikipedia.org/wiki/Matter_wave

It also needs to be pointed out de Broglie's hypothesis was consigned to the dustbin of history when Dirac came up with his transformation theory late 1926 - probably sooner since it birthed Schroedinger's wave mechanics - but that too was overthrown - or rather shown to be part of a more comprehensive theory. The 1926 theory of Dirac is basically QM as we know it today and that is not based on matter waves. These days its known to be the most reasonable extension to standard probability theory that allows continuous transformations between so called pure states - but discussing that is a whole new thread. Suffice to say its got nothing to do with matter waves which are as dead as the Do Do, expect of course for the very important study of the history of QM. In fact that's the reason it still hangs around - most textbooks (not all - but most) take a semi historical approach but don't then emphasise the ideas that birthed QM are, at best viewed totally differently, and actually WRONG.

Thanks
Bill

.
 
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