What Is the Origin of Electric Charge and Its Properties?

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Discussion Overview

The discussion centers on the origin of electric charge and its properties, exploring theoretical explanations and the implications of charge in physics. Participants delve into the nature of electric charge, its conservation, and its relationship to fundamental symmetries in physics.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • Some participants express uncertainty about the nature and origin of electric charge, noting that while charges generate forces and fields, a clear explanation remains elusive.
  • One participant suggests that the charge of observable particles can be related to the charge of quarks, but questions why electrons and protons possess opposite charges.
  • Another participant emphasizes that every electron has a charge of "-1" and every proton has a charge of "+1", highlighting the experimental verification of these values.
  • Speculative theories are mentioned, including the idea that charge may be linked to topological properties of particles.
  • Some participants propose that electric charge is a conserved quantity associated with local U(1) gauge symmetry, as described by Noether's theorem, but acknowledge that the fundamental reason for this symmetry remains unexplained.
  • One participant humorously remarks that the existence of electric charge contributes to the universe's complexity and interest, implying that its absence would lead to a dull universe.
  • There is a correction regarding the charge of electrons and protons, with some participants clarifying that they do not have the same charge, although this point is debated in terms of relevance to the original question.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the origin of electric charge, with multiple competing views and speculative ideas presented throughout the discussion.

Contextual Notes

Some claims rely on specific definitions and assumptions about charge and symmetry, and the discussion includes unresolved questions about the fundamental nature of these concepts.

jafari001
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Is there any explanation about the nature of electric charge? Everyon currently knows that an electric charge has ability to generate force and an electromagnetic field. Also, it has attractive and repulsive reactions to other charged particles. Finally, it is known that electric charges obey the law of conservation and quantization. But, the question still remains, what is the origin of electric charge?
 
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Today, it seems we can hardly answer this question, we even can't imagine an "explanation".
We can a most relate the charge of observable particles to the charge of quarks they are made of.
But we probably can't even explain why electron and protons have the (same) exactly opposite charges.
Can we?

By the way, what do you call an explanation?

By the way, if you assume that the world is governed by fields and their symmetries,
the the Maxwell's equations are almost the simplest possibilities.
Maybe the explanation of charge, is "simplicity"?

______
What is the origin of gravity?
It is because an apple falls on earth.
 
Last edited:
maajdl said:
But we probably can't even explain why electron and protons have the same charge.

They don't have the same charge.
 
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Every electron has the same amount of electric charge, conveniently designated as "-1". This has been experimentally verified to extreme precision: http://physics.nist.gov/cgi-bin/cuu/Value?e

Every proton has charge "+1", though not verified to the same accuracy as the electron.

As a result every neutral hydrogen atom (existing as an atom, not as an H2 molecule) has the same spectrum - which has been verified extensively via astronomical and terrestrial measurements: http://physics.nist.gov/Pubs/AtSpec/node03.html

What is the origin of the electric charge? This is unknown - however speculative theories often propose something topological. For example: "Particles as stable topological solitons"
http://iopscience.iop.org/1742-6596/361/1/012022/pdf/1742-6596_361_1_012022.pdf
 
adjacent said:
They don't have the same charge.

While technically true, this is not helpful, and not relevant to the OP's question.
 
jtbell said:
It's the conserved quantity associated with local U(1) gauge symmetry, via Noether's theorem.
This is the answer I would say also. Charge occurs because every differentiable symmetry of the Lagrangian implies the existence of a conserved quantity. The EM Lagrangian has a gauge symmetry, and the corresponding conserved quantity is the charge.

Of course, that begs the question as to why does EM have that gauge symmetry. Right now, that is taken as fundamental and unexplained.
 
Vanadium 50 said:
While technically true, this is not helpful, and not relevant to the OP's question.

I know.I just said it to prevent confusion.
His post is now edited :wink:
 
Why does electric charge exist in the universe? Because the universe would be an incredibly boring place without things like chemical reactions, EM waves, and satellite television.
 
  • #10
This thread is a crackpot magnet. Thread closed.
 

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