Is gravity a bigger mystery than charge?

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Discussion Overview

The discussion revolves around the comparative understanding of gravity and electric charge as fundamental forces in physics. Participants explore whether science has a better grasp of the mechanisms behind these forces and the implications of their mysteries.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants suggest that gravity is more mysterious than charge, citing the lack of a quantum theory for gravity and the absence of detected gravitons.
  • Others argue that the prevalence of discussions about gravity does not necessarily indicate that it is more problematic for the scientific community.
  • One participant notes that the gravitational coupling constant is much lower than the fine structure constant, making experimental investigation of gravity more challenging.
  • It is mentioned that electromagnetic force is mediated by photons and that quantum electrodynamics is well-established, contrasting with the classical treatment of gravity through General Relativity.
  • Participants highlight that the non-linear nature of General Relativity adds complexity compared to the linearity of electromagnetic theory as described by Maxwell's equations.

Areas of Agreement / Disagreement

Participants express differing views on whether gravity is indeed more mysterious than charge, with no consensus reached on the comparative understanding of these forces.

Contextual Notes

Some limitations include the dependence on definitions of "mystery" and the varying levels of understanding within the scientific community regarding both forces.

manulal
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Dear Friends,

I am presently studying physics on my own. (Not for a degree but just out of curiosity)

My question is, both gravity and charge being fundamental forces, is science more comfortable in explaining one of them compared to other?

I see some threads here wondering what exactly the mechanism of gravity is. I too wonder about that.

But I did not see anyone asking the same about electric charge. Does it mean that science has a better understanding about the mechanism of charge?

To me, both are equally mysterious.
 
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We have physical objects which are the source of the electric charges, and we know that all mass has gravity, but I would say that gravity is a little more mysterious than charge is.
 
Electromagnetic force is mediated by photons. The theory (quantum electrodynamics) has been thoroughly worked out.

Gravity on the other hand is a classical theory, using General Relativity. There is a general belief that it should be a quantum theory, with gravitons as the mediator, but so far gravitons have not been detected.
 
manulal said:
Dear Friends,

I am presently studying physics on my own. (Not for a degree but just out of curiosity)

My question is, both gravity and charge being fundamental forces, is science more comfortable in explaining one of them compared to other?

I see some threads here wondering what exactly the mechanism of gravity is. I too wonder about that.

But I did not see anyone asking the same about electric charge. Does it mean that science has a better understanding about the mechanism of charge?
The fact that you see more threads about the nature of gravity means more people find gravity mysterious, but it doesn't necessarily mean that to the scientific community gravity is the more problematic.
 
The reason that gravity might be considered "more mysterious" is that the gravitational coupling constant is so much lower than the fine structure constant, so it is harder to investigate experimentally.
 
mathman said:
Electromagnetic force is mediated by photons. The theory (quantum electrodynamics) has been thoroughly worked out.

.

Electromagnetic theory makes certain assumptions about the cause just as gravitational fields are useful for visualizing - but like gravity. the measured forces are not directly calcuted from any model - only the coeficiants of the underlying Dyson equation of real 0
fficients
 
The classical theory of gravity (GR) is non-linear, while the classical theory of E&M (Maxwell's equations) is linear, so there's that added complication for gravity...
 
Thank you all for the valuable replies.
 

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