Understanding the Nature of Electricity: Flow of Electrons or Electric Charge?

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Discussion Overview

The discussion centers around the nature of electricity, specifically whether it is characterized by the flow of electrons or the flow of electric charge. Participants explore various theories and interpretations related to this concept, touching on both classical and modern understandings of electricity.

Discussion Character

  • Debate/contested
  • Conceptual clarification
  • Exploratory

Main Points Raised

  • Some participants argue that electricity is the flow of electric charge, typically associated with the movement of electrons, while others suggest that the concept of "holes" in valence shells also plays a role.
  • One participant notes that in conductors, the concept of hole flow is not applicable, suggesting it is limited to semiconductors.
  • Another viewpoint posits that electricity is more accurately described as an impulse of energy rather than merely the movement of electric charges, highlighting the slow drift speed of electrons.
  • Concerns are raised about the apparent contradiction between the slow drift speed of electrons and the immediate effect of turning on a light switch, leading to discussions about the speed of voltage propagation.
  • Some participants emphasize that theories of electricity are varied and that no single theory can claim to represent the ultimate truth, suggesting that theories are tools for understanding specific phenomena.
  • There is a discussion about the historical context of conventional current and how it has persisted despite potential confusion in its original definition.

Areas of Agreement / Disagreement

Participants express multiple competing views regarding the nature of electricity, with no consensus reached on whether it is best described as the flow of electrons, electric charge, or an impulse of energy. The discussion remains unresolved with various interpretations presented.

Contextual Notes

Participants acknowledge limitations in their understanding and the complexity of the topic, indicating that a comprehensive explanation of current and electricity cannot be fully addressed in a single forum thread.

  • #91
You are not wasting anybodies time!
No one is forced to post here! It is very satisfying to be able to help and there is so much expertise here that think we are all still learning.
We are all here for the same reason.
 
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  • #92
toneboy1 said:
H'mm, ok well if there is a single particle of some charge, and a photon comes buy, would the particle move on one direction for half the wavelength then in the opposite for the other half? (and not get very far?)

Thanks
I think you mean half the period? But yes, basically.
This is the grey zone between QM and Classical.
There is a situation in the Ionosphere where there are free electrons that can be 'seen' to 'vibrate' as a radio wave passes. Again, this is because the energy gaps involved for a free electron in a very low density plasma are very small and a classical approach works fine by treating the plasma as a conductor with the electrons moving one way and the much heavier ions moving (a smaller distance) the other way, as the fields vary around them. Because the electrons are not in a metal, they actually do move a significant distance in the time period of a 1MHz radio wave.

If you don't have access to textbooks then trawl around the net for .org and .edu sites for more reliable opinions. Beware, there are some dreadful, cranky and harmful sites that may read as gospel. Look for a majority opinion if you get confused.
 
  • #93
sophiecentaur said:
I think you mean half the period? But yes, basically.
This is the grey zone between QM and Classical.
There is a situation in the Ionosphere where there are free electrons that can be 'seen' to 'vibrate' as a radio wave passes. Again, this is because the energy gaps involved for a free electron in a very low density plasma are very small and a classical approach works fine by treating the plasma as a conductor with the electrons moving one way and the much heavier ions moving (a smaller distance) the other way, as the fields vary around them. Because the electrons are not in a metal, they actually do move a significant distance in the time period of a 1MHz radio wave.

If you don't have access to textbooks then trawl around the net for .org and .edu sites for more reliable opinions. Beware, there are some dreadful, cranky and harmful sites that may read as gospel. Look for a majority opinion if you get confused.


Thanks for the advice! There is an art to 'trawling', yes I've seen a lot of contradictory information on subjects where you would expect only people who know what they are talking about would contribute to.

I realize in hind-sight that I phrased my question poorly, intuitively I was thinking that only the E part of the photon would stimulate a dipole moment or electrons. I think you answered my queries never-the-less.

TYVM!
 

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