All Questions
Tagged with gravity electromagnetism
207
questions
7
votes
3
answers
822
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
-5
votes
4
answers
13k
views
What is the difference between gravitation and magnetism?
If you compress a large mass, on the order of a star or the Earth, into a very small space, you get a black hole. Even for very large masses, it is possible in principle for it to occupy a very small ...
- 151
3
votes
2
answers
713
views
Gravititonal fields compared to electromagnetic fields - are they infinite in range?
me and my friend has a discussion last night, and he argued that both an electromagnetic field and gravititonal field are infinite in their area of effect, but with diminishing effects as you get ...
- 133
3
votes
4
answers
549
views
existence of other forces obeying inv square law
Is there any restriction in what we know of physics to the existence of other type of forces that obey the inverse square law in 3 dimensions.
I mean other than electromagnetic and gravitational.
...
- 627
5
votes
1
answer
500
views
Electric potential energy in curved space-time
In flat space-time the electric potential energy between two charges is $\frac{k Q_1 Q_2}{r_{12}}$, where $Q$'s are charges and $r_{12}$ is the distance between them. What would happen if the two ...
- 895
10
votes
3
answers
597
views
Field created by varying Gravitational field
Changing Electric Field causes Magnetic filed and changing Magnetic Field causes Electric Field. Is there anything similar in relation to Gravitational Field? What sort of field is created by varying ...
- 501
1
vote
2
answers
183
views
A question on a system of particles governed by laws of gravity and electromagnetic field
Consider a system of many point particles each having a certain mass and electric charge and certain initial velocity. This system is completely governed by the laws of gravitation and electromagnetic ...
- 2,152
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 ...
- 6,044
7
votes
4
answers
2k
views
What is the medium that allows magnetic fields *or any forcefield* to exist?
Magnetic fields are obvious distortions.. of.. something, but what exactly are they distortions of? Massive objects produce curvatures/gradients in space-time resulting in what we observe as gravity.....
- 177
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
views
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
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 ...
- 1,445