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Old 03-18-2017, 01:43 AM
 
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Can magnetism propagate through open space?

Is magnetism like radiation in which there is particle such as photons that carry it through space?

Magnetism refers to the positive and negative charges of particles right? And there attraction and repulsion effects correct?

So if have an empty universe with a negative charge particle one light year away from a positive charged particle, will they attract each other across the empty space?
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Old 03-18-2017, 12:41 PM
 
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The proper term is electromagnetic. Yes, electromagnetism propagates through space - witness telecommunication satellites, witness the Earth's magnetic field.

Be careful about assigning particles. Light travels at the speed of light in a vacuum. Objects with mass cannot reach the speed of light. In a sense, the photon as a particle does not exist until light interacts with something.

Magnetism does not refer to the charge of a particle. Those are two separate properties.

When dealing with electromagnetism and the effects, the inverse square law applies. Using an analogy, if you stomp your foot the force might be noted if you are standing on a suspended hardwood floor, but the chance of it being noted in China is so small as to be meaningless. Attraction between particles a light year apart would be orders of magnitude more small.
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Old 03-18-2017, 08:55 PM
 
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Quote:
Originally Posted by harry chickpea View Post
The proper term is electromagnetic. Yes, electromagnetism propagates through space - witness telecommunication satellites, witness the Earth's magnetic field.

Be careful about assigning particles. Light travels at the speed of light in a vacuum. Objects with mass cannot reach the speed of light. In a sense, the photon as a particle does not exist until light interacts with something.

Magnetism does not refer to the charge of a particle. Those are two separate properties.

When dealing with electromagnetism and the effects, the inverse square law applies. Using an analogy, if you stomp your foot the force might be noted if you are standing on a suspended hardwood floor, but the chance of it being noted in China is so small as to be meaningless. Attraction between particles a light year apart would be orders of magnitude more small.
Is magnetism and electromagnetism different?

What about the positive/negative charge? Do they only repel or attract if touching each other?
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Old 03-18-2017, 11:48 PM
 
23,563 posts, read 70,158,065 times
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Quote:
Originally Posted by NJ Brazen_3133 View Post
Is magnetism and electromagnetism different?

What about the positive/negative charge? Do they only repel or attract if touching each other?
The visual of the wave is usually the electric component of the wave going up and down, and the magnetic force represented as going side to side.

If you run a current through a wire, it will generate a magnetic field.
If you run a wire through a magnetic field, it will generate electricity.

The two are obviously related. Rather then my answering questions haphazardly, it would be better if you read a basic electricity book or explanatory website. It is possible to have to unlearn assumptions if the principles are not taught in sequence.




Define "touch." Electron clouds are areas where there is a charge, but at any point in time and space an electron may or may not be there. Here, you might do better with a basic chemistry book and learning about valences and bonds.
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Old 03-24-2017, 08:46 PM
 
17,876 posts, read 15,837,360 times
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Quote:
Originally Posted by harry chickpea View Post
The visual of the wave is usually the electric component of the wave going up and down, and the magnetic force represented as going side to side.

If you run a current through a wire, it will generate a magnetic field.
If you run a wire through a magnetic field, it will generate electricity.

The two are obviously related. Rather then my answering questions haphazardly, it would be better if you read a basic electricity book or explanatory website. It is possible to have to unlearn assumptions if the principles are not taught in sequence.




Define "touch." Electron clouds are areas where there is a charge, but at any point in time and space an electron may or may not be there. Here, you might do better with a basic chemistry book and learning about valences and bonds.
When I say touch, I mean the particles come into contact with each other. So for opposite charges they touch and stay together, for same charges they touch and repel each other.

And you mention something about Earth's magnetic field. Is it basically a rope of electrons that get whipped out into space beyond the atmosphere?
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Old 03-24-2017, 09:07 PM
 
23,563 posts, read 70,158,065 times
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"Rather then my answering questions haphazardly, it would be better if you read a basic electricity book or explanatory website. It is possible to have to unlearn assumptions if the principles are not taught in sequence."
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Old 01-03-2021, 04:48 PM
 
Location: California
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Looks as though astrophysics is paying more attention to magnetogenesis or at least magnetic fields in space being throughout:

https://www.quantamagazine.org/the-h...view-20200702/
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Old 01-03-2021, 06:01 PM
 
Location: Martinsburg, West Virginia
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Magnetism is the flow of electrons. This flow is generated by a dynamo. Think of the alternator in your car. Earth generates a magnetic field because the iron core rotates at a different speed than the rest of the planet. The gas giant planets spin on their axises at different speeds at different depths and according to the latitudes. Same with the sun. The sun spins at different speeds in different places.

There is a positive and negative or north and south poles to every magnet. Is there magnetism in empty, open space? Yes. However there has to be a generator. The Milky Way has a magnetic field produced by the hundreds of billions of constituent stars that make up the galaxy and by turbulent gas found within. The gas clouds get stirred by the movement of stars, temperature and density differences, and the gas, if dense enough and the potential great enough, can conduct electricity.

Someone posted that you read articles and books. I would suggest reading Astronomy Magazine. Even if you don’t subscribe, go to www.astronomy.com and read the free articles. The articles within are well written and researched, easy to read. Hopefully this helps.
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Old 01-04-2021, 07:14 AM
 
Location: California
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An excerpt from the article:

Quote:
Last year, astronomers finally managed to examine a far sparser region of space — the expanse between galaxy clusters. There, they discovered the largest magnetic field yet: 10 million light-years of magnetized space spanning the entire length of this “filament” of the cosmic web. A second magnetized filament has already been spotted elsewhere in the cosmos by means of the same techniques. “We are just looking at the tip of the iceberg, probably,” said Federica Govoni of the National Institute for Astrophysics in Cagliari, Italy, who led the first detection.

The question is: Where did these enormous magnetic fields come from?

“It clearly cannot be related to the activity of single galaxies or single explosions or, I don’t know, winds from supernovae,” said Franco Vazza, an astrophysicist at the University of Bologna who makes state-of-the-art computer simulations of cosmic magnetic fields. “This goes much beyond that.”

One possibility is that cosmic magnetism is primordial, tracing all the way back to the birth of the universe. In that case, weak magnetism should exist everywhere, even in the “voids” of the cosmic web — the very darkest, emptiest regions of the universe. The omnipresent magnetism would have seeded the stronger fields that blossomed in galaxies and clusters.
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Old 01-04-2021, 10:05 AM
 
11,230 posts, read 9,241,150 times
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Quote:
Originally Posted by NJ Brazen_3133 View Post
Can magnetism propagate through open space?
No, it is conducted through the magnetiferous ether, just like light is conducted through the luminiferous ether.
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