All Questions
Tagged with gravity magnetic-fields
39
questions
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Dual of Newtonian gravitational field
In the static state, the laws of Newtonian gravity and Coulomb force have exactly same formulas,
$$F = K \frac{A_1A_2}{r^2}.$$
In the electrical case, moving materials produce a field, say a dual ...
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0
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21
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Charged particles deflected by gravitational and magnetic fields
I am trying to better understand one of my previous questions, and another.
Charged particle in uniform Magnetic field
Does a charged particle orbiting Earth radiate?
https://en.wikipedia.org/wiki/...
9
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2
answers
2k
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On a magnetar, which force would exert a bigger pull on a 10 kg iron chunk?
On the surface of a magnetar, what would pull harder on a 10 kg piece of iron, the gravity or the magnetic field?
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53
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Is there an upper boundary to magnetism?
This is gonna take some explaining, and full disclosure: I'm still undergrad, so please, forgive my ignorance here. Though please also hear me out: magnetism, like gravity, falls off with distance, ...
4
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2
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490
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New "gravity force" analogous to magnetic force?
I was watching Eugene Khutoryansky's physics video about Einstein's Gravito-Electromagnetism, Gravity of moving mass in General Relativity
. In that, he discussed why maxwell's electromagnetism laws ...
0
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1
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162
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Is gravity the result of protons and electrons? [closed]
I understand that gravity is the result of a curved space/time caused by mass. But is it possible that gravity is the result of protons and electrons magneticly interacting on a massive scale? Large ...
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2
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79
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Is it possible to make a magnetic box that will compensate Earth gravity allowing magnetic objects inside to fly on orbits like in space? [closed]
Is it possible to simulate solar system using magnetic spheres and some kind of box that will compensate the Earth gravity by magnetic force?
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245
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Does electric field really exist or it is just an interpretation? [duplicate]
Did physicist create the concept of electric field to describe the interaction of charge particles at a distance? If they are real, do we have experimental evidence? Please describe some of them. And ...
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1
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91
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Gravito-magnetism and gravitational waves outside of General Relativity
An important implication of (linearised) Einstein equations is that you can write a gravito-magnetic field in addition to the gravito-electric field (the classic gravitational field). And from there ...
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Does a Magnetar have a magnetic event horizon different than it's schwarzchild radius?
Being the strongest magnets in the universe I think there would be a point of know return different for a neodymium magnets then that of similar non magnetic mass.
3
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1
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141
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Why do the sensitivities of magnetometers and gravimiters have such strange units?
It looks like the sensitivities of magnetometers and gravimeters are usually reported with the units of $\text{Tesla}/\sqrt{\text{Hz}}$ and $\text{Gal}/\sqrt{\text{Hz}}$, respectively (where "Gal&...
2
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How can black holes emit detectable magnetic fields and gravity if nothing can escape the event horizon? [duplicate]
How can black holes emit detectable magnetic fields and gravity if nothing can escape the event horizon?
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2
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504
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Do magnetic things fall faster?
Assuming correct orientation, do magnetic things fall faster than non-magnetic ones because of the magnetic field of the Earth? Of course it is clear that if any, the effect is very very small, but ...
1
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3
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231
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Can a gravitational field be focused like a magnetic field?
A pyramidal magnet will focus a greater magnetic field at the top of the pyramid than at the bottom. See video here Is there any evidence that the same holds for a gravitational field? Perhaps the ...
0
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1
answer
90
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Does gravity induce charges to form magnetic fields?
We all know that moving electric charges produce magnetic fields. Gravity is said to be equivalent to acceleration which implies movement. Does this mean that an outside observer will see an ...
2
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1
answer
182
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Where is magnetic field for gravity? [duplicate]
Reading the book called "The great design particles fields and creation" one finds the following paragraph
In a universe like ours, constructed of electrically charged elements, magnetism ...
3
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1
answer
194
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Why don't ferrous metals fall to earth faster than other objects?
Given that gravity is a weak force compared with magnetism and given the fact that the earth is a magnet, why don't ferrous metals fall to earth faster than other objects? Seems like they should!
3
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2
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1k
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Do gravitational fields interact with electric or magnetic fields?
We know that Electric Fields interact with Magnetic Fields, but do Electric Fields or Magnetic Fields interact with Gravitational Fields, and if so how?
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116
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Is gravitomagnetism a thing or just an analogy to explain why object precess near massive object?
I browsed a couple of articles treating gravity like a bar magnet, explaining how object can precess in the vicinity of gravity well using analogy of motion of charged particle in magnetic field. So I ...
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1
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76
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Is the magnetic force fully analogous to gravitation?
Superficially, the force between two magnets would seem to be fully analogous to gravity because each is the product of two factors divided by the square of the distance between the objects being ...
12
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1
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6k
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How does this magnetic toy work?
A nephew of mine has this toy called "Gravitrax". It is basically a track building kit - you can build various tracks for iron balls which go through the track thanks to gravity.
However, there is ...
-3
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1
answer
106
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Can my theory work for letting the swinging work?
This is my theory, will it stop after few hours? why would it stop? i have on top S to S to repel then i have N S to attract, to produce random force for the swing. Then i have large N N repel to push ...
6
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2
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591
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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?
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1
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164
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Does energy of photon change due to some external magnetic field?
I came to know about the energy of photon changes (decreases) while going away from the emitter (even from earth) due to gravitational field effects.
Is there any change in energy/wavelength of a ...
1
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1
answer
70
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Influences on wavefunction path analysis
I was looking at simulations of a wave going through a slit. When the wavelength was much smaller than the slit width, the wave went through the slit and kept going straight like a laser beam. But ...
4
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1
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1k
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Electron traveling through gravitational and magnetic field
When an electron travels through a magnetic field it experiences the Lorentz force. The force acting on the electron causes an acceleration and therefore Cyclotron radiation is emitted. After reading ...
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A question gravitation and magnetism? [closed]
Suppose I have a magnet and I put a piece of iron next to it, then the magnet will attract it.
Now if I put a piece of wood in front of the magnet and the piece of iron, the iron will not get ...
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1
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237
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In atoms which are more likely to attract first until they are together? Magnetism, gravity, electrostatic charge or other? [closed]
When do single atoms begin to pull together when they are close enough like 2 magnets?
Could 1 atom contain a magnetic field and would it be stronger than an atom's own gravity?
I know that atoms ...
4
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1
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269
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If light is affected by gravity, does that mean gravity affects electrical&magnetic fields too?
Since we observed that masses indeed bend the light, and since we consider light to be composed of electrical and magnetic fields, does that mean a single point charge will result with bent electrical ...
0
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2
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861
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Why can a magnet setup not fly?
I know that the following setup won't work to lift it up forever:
But I'm struggling to convince myself why. If the top magnet is strong enough to lift the weight, why is the bottom magnet not ...
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2
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2k
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what is the result of change in gravitational flux?
As a change in magnetic flux results in induced EMF (electromotive force) likewise what is the result of a change in gravitational flux?
UPDATE: Gravitational flux according to me has only ...
1
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2
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5k
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Why doesn't a magnet on a refrigerator slide down?
Obviously gravity pulls objects towards the earth's surface. Now suppose I have a refrigerator and a magnet. The magnetic force is perpendicular to the gravitational force. So it is not counteracting ...
4
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2
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1k
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What is the physics of tilt compensation of an electronic compass
This question concerns the physics behind the implementation of electronic compasses to find the orientation of a device.
In the robotics community, 3-axis magnetometers are often used for this ...
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3
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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 ...
1
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1
answer
620
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What happens to atoms in extremely strong electromagnetic fields?
I know that strong gravitational fields on the order of neutron stars (at the crust) atoms get compressed so tightly, the empty space between them is significantly reduced and it becomes denser. (http:...
1
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1
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209
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Faradays law for a falling magnet
If experimentally it can be proven that the velocity of a falling magnet through a coil is proportional to the emf induced, has it also been proven that dB/dt is proportional to the emf induced and ...
2
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2
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18k
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Could you use earth's magnetic field to build a hover skateboard? [closed]
In "Back to the Future" they use levitating anti-gravo skateboards without wheels which will be difficult to build, because there is no theory on how anti-gravity could be created.
A possible ...
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2
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4k
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Is there a relation between the magnetic field force of the earth and the gravitational force between the earth and other bodies? [closed]
According to Newton's Universal Law of gravitation, we can say that a huge body of mass will attract another body of mass within a short range, however, if both bodies are for instance magnetic, ...
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1
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2k
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If the Moon had gravity as strong as the Earth's, and a magnetic field, could it have supported life?
If the Moon had gravity as strong as Earth's, and a magnetic field, could it have supported life? Because if the Moon had as much gravity as Earth, it could have retained more water than is present ...