All Questions
Tagged with gravity electromagnetism
42
questions
46
votes
9
answers
12k
views
Is it theoretically possible to shield gravitational fields or waves?
Electromagnetic waves can be shielded by a perfect conductor. What about gravitational fields or waves?
- 563
13
votes
2
answers
5k
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Noticing that Newtonian gravity and electrostatics are equivalent, is there also a relationship between the general relativity and electrodynamics?
In classical mechanics, we had Newton's law of gravity $F \propto \frac{Mm}{r^2}$. Because of this, all laws of classical electrostatics applied to classical gravity if we assumed that all charges ...
- 6,000
17
votes
2
answers
4k
views
Geometric interpretation of Electromagnetism
For gravity, we have General Relativity, which is a geometric theory for gravitation.
Is there a similar analog for Electromagnetism?
- 465
16
votes
8
answers
42k
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Is gravity just electromagnetic attraction?
Recently, I was pondering over the thought that is most of the elementary particles have intrinsic magnetism, then can gravity be just a weaker form of electromagnetic attraction? But decided the ...
- 1,804
36
votes
4
answers
4k
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The problem of self-force on point charges
Allow me to preface this by stating that I am a high school student interested in physics and self-studying using a variety of resources, both on- and off-line, primarily GSU's HyperPhysics website, ...
- 492
10
votes
4
answers
14k
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Similarity between the Coulomb force and Newton's gravitational force
Coulomb force and gravitational force has the same governing equation. So they should be same in nature. A moving electric charge creates magnetic field, so a moving mass should create some force ...
- 1,975
32
votes
3
answers
5k
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Why is there no gravitational magnetic field? (Or, is there?)
We can think that the electric field and the gravitational field operate similarly in the sense that the forms of their governing laws (namely, Coulomb's law and Newton's law respectively) are ...
user87745
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:...
user26425
7
votes
3
answers
821
views
Charging a black hole?
What would happen if we have a black hole and we start shooting at it a single electron at a time, and go on doing it forever? Would the electrons start to bounce off eventually?
- 589
1
vote
4
answers
4k
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Gravitational force and Electromagnetic force?
I found this interesting note in one of my textbooks,
The enormous strength of the electromagnetic force compared to gravity is evident in our daily life. When we hold a book in our hand, we are ...
- 335
23
votes
2
answers
35k
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Does gravity affect magnetism, vice-versa, or do they "ignore" each other?
I am suddenly struck by the question of whether gravitation affects magnetism in some way. On the other hand, gravity is a weak force, but magnetism seems to be a strong force, so would magnetism ...
- 559
17
votes
4
answers
26k
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If gravity is a bend in Space-time then what is magnetism?
Einstein postulated that gravity bends the geometry of space-time then what does magnetism do in to the geometry of space-time, or is there even a correlation between space-time geometry and magnetism?...
- 171
15
votes
4
answers
1k
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Coulomb's Law in the presence of a strong gravitational field
I was under the impression that the $1/r^2$ falloff of various forces were because of the way the area of a expanding sphere scales. But that strict $1/r^2$ falloff would only be globally true in a ...
- 657
6
votes
2
answers
591
views
Are static magnetic and electric fields distorted by gravity? How?
Suppose we have a pointed electric charge or a bipolar magnet. If we put a massive gravity source nearby, will the magnetic and electric fields be distorted? In what way?
- 11.2k
6
votes
1
answer
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How to debunk 'The Electric Universe'? [closed]
My father is a generally intelligent person, however he has latched onto a theory which I believe to be completely incorrect.
He doesn't believe in gravity, but rather subscribes to an 'Electrical ...
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