Can maxwell's EM theory explain the photoelectric effect?

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SUMMARY

Maxwell's electromagnetic (EM) theory does not fully explain the photoelectric effect, which was primarily elucidated by Einstein through the concept of light as particles (photons). While classical EM can predict that light shining on a metal will emit electrons, it fails to account for the specific properties observed in the photoelectric effect, particularly the impulsive interaction between light and charged particles. The Lorentz force law describes continuous interactions in Maxwell's theory, contrasting with Einstein's particle-based model that introduced a new paradigm in physics, justifying his Nobel Prize recognition.

PREREQUISITES
  • Understanding of Maxwell's equations and classical electromagnetism
  • Familiarity with the photoelectric effect and its historical significance
  • Knowledge of quantum mechanics and particle-wave duality
  • Basic grasp of the Lorentz force law and its implications
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  • Research the implications of the photoelectric effect on quantum mechanics
  • Study the differences between classical and quantum descriptions of light
  • Explore the historical context of Einstein's Nobel Prize-winning work
  • Investigate modern applications of the photoelectric effect in technology
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Physics students, educators, and researchers interested in the foundations of quantum mechanics and the historical development of electromagnetic theory.

needguidance
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i know that einstein explained it in terms of particles but can maxwells EM waves explain the photoelectric effect aswell?
 
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needguidance said:
i know that einstein explained it in terms of particles but can maxwells EM waves explain the photoelectric effect aswell?

This is a bit strange, because since the classical E&M theory was in existence long before the Einstein's photoelectric effect model, one would think that if the classical E&M theory at that time can already describe the photoelectric effect, the phenomenon won't be THAT big of a "puzzle" at that time, will it?

Have you read anything about the http://galileo.phys.virginia.edu/classes/252/photoelectric_effect.html" ?

Zz.
 
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needguidance said:
i know that einstein explained it in terms of particles but can maxwells EM waves explain the photoelectric effect aswell?

That depends what you mean by "the photoelectric effect." If you're simply asking whether classical EM predicts that shining light on a metal will cause it to emit electrons, the answer is yes. If you're asking whether classical EM can reproduce the particular properties of photoelectric emission that led Einstein to think about it in terms of particles of light, the answer is maybe, depending on what kind of quantum mechanical model you introduce for the metal. But, if you're asking whether classical EM can reproduce all properties of the photoelectric effect that have been observed through the present, the answer is no.
 
needguidance said:
i know that einstein explained it in terms of particles but can maxwells EM waves explain the photoelectric effect aswell?

In my opinion, no. The mechanism whereby the Maxwellian fields (which are continuous in space and time) interact with electric charge is via the Lorentz force law. In brief, the Maxwell/Lorentz force on charged particles occurs continuously in space and time. In Einstein's explanation of the photoelectric effect, the interaction between the field and a charged particle occurs impulsively, essentially at a given point in space/time. Of course the lame answer is that if the photoelectric effect did not introduce a new paradigm for field/particle interactions, then why did Einstein get the Nobel prize?
 

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