Linked Questions

5 votes
3 answers
3k views

Is it possible/correct to describe electromagnetism using curved space(-time)? [duplicate]

Comparing the simples form of the forces of both phenomena: the law of Newton for gravitation $V\propto \frac{1}{r}$, and the Coulomb law for electrostatics $V\propto \frac{1}{r}$, one might think ...
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  • 1,415
3 votes
3 answers
266 views

How deep is the analogy between gravity and electrodynamics?

When I was first taught about electrostatics I was taught about it by analogy to gravity. Specifically, the force due to gravity between two objects is, $$F_g=G\frac{m_1m_2}{r^2}$$and similarly the ...
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  • 951
21 votes
2 answers
3k views

Is Newton's universal gravitational constant the inverse of permittivity of mass in vacuum?

Is it possible to consider Newton's universal gravitational constant, $G$, as inverse of vacuum permittivity of mass? $$\epsilon_m=\frac {1}{4\pi G}$$ if so, then vacuum permeability of mass will be:...
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6 votes
2 answers
383 views

General relativity without curvature?

Is there a reformulation of general relativity without curved space time, just with fields (like classical E&M)? Edit: removed the part about E&M with curvature (multiple posts).
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  • 145
6 votes
2 answers
4k views

Theories that Relate Gravity, Electricity, and Magnetism [duplicate]

There are some people who (without having a stated theory that I know of) insist that Gravity, Electricity, and Magnetism are related. Some point to symmetry in Maxwell's Equations as a potential ...
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  • 5,826
5 votes
2 answers
368 views

What is the difference between gravitation and electromagnetism?

I am currently studying electrodynamics. And when looking at Maxwell's equations, I don't see any reason, why we cannot apply them to gravity. We know that charges generate a force field that ...
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  • 602
4 votes
1 answer
16k views

Is there any relationship between Gravity and Electromagnetism? [duplicate]

We all know that the universe is governed by four Fundamental Forces which are The strong force , The weak force , The electromagnetic force and The gravitational force . Now, is there any ...
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2 votes
1 answer
2k views

Is there a fundamental relationship between Coulomb's law and Newton's Law of Gravitation? [duplicate]

It seems like the two equations are identical indicates that there is something more going on that unites them both, maybe in a cool way or something. Why are these two laws so similar?
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1 vote
1 answer
753 views

Why is gravity viewed as a curvature of spacetime and not the electromagnetic force? [duplicate]

There are four known forces in the universe. Two of these forces are the force of gravity and the force of electromagnetism. The first is the result of the mass of the object that has the gravity. The ...
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1 vote
1 answer
744 views

Gravimagnetic monopole and General relativity

Review and hystorical background: Gravitomagnetism (GM), refers to a set of formal analogies between Maxwell's field equations and an approximation, valid under certain conditions, to the Einstein ...
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  • 2,465
-1 votes
1 answer
3k views

What is the difference between an electric field and gravitational field? [duplicate]

Since the electrostatic field and the Newtonian gravitational field share a similar form: proportional to $$ \frac{1}{r^2} $$ Is there any qualitative difference between motions under the ...
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-1 votes
1 answer
2k views

Is the structural similarity between atoms ( smallest) and universe (biggest) a conincidence. Or there can a reason for this beyond imaginations

Is the structural similarity between atoms ( smallest) and universe (biggest) a coincidence? Or there can a reason for this beyond imaginations? It seems like, if one starts travelling out from atoms....
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  • 299
3 votes
0 answers
504 views

Can a Set of "Maxwell's Equations" for Newtonian Gravitation be Derived from Newton's Force + Special Relativity?

When I learned about electromagnetism in my first year of undergraduate school, Maxwell's equations were derived roughly in the following way (see also here or in [1]): Gauss's law for a static ...
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  • 3,107
0 votes
0 answers
72 views

To What Extent are Magnetism and Gravity Related and Unrelated? [duplicate]

I find many people (especially UFO-ologists) are quick to say there is an interplay between magnetism and gravity, especially when explaining antigravity of UFOs. On the other side, I see those who ...
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  • 101
-1 votes
0 answers
42 views

Isn't there something "dual" to gravity like magnetic field to electric field? [duplicate]

It is well-known that general relativity explains gravity as bending of spacetime, the idea of which is proposed by Einstein in order to include gravity into relativity theory. However, I recently ...
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