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PeterPeter
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How can you possibly have a magnetic monopole? The field lines must terminate somewhere, surely!
I heard about them on a cosmology video on YouTube.
I heard about them on a cosmology video on YouTube.
field lines from a magnetic monopole may end on a magnetic monopole of opposite magnetic charge.PeterPeter said:How can you possibly have a magnetic monopole? The field lines must terminate somewhere, surely!
Nugatory said:That's a good reason not to get your physics from videos on YouTube.
But if you are going to indulge, at least give us the link so that we can tell you whether that particular video is any good. In this case, I'm skeptical because there are no magnetic monopoles.
dauto said:Not so fast. The standard model predicts the existence of magnetic monopoles. Look up "T hooft Polyakov monopole"
No, magnetic field lines can start and end on magnetic monopoles as ## \nabla \cdot B=\rho_\mathrm{m}##, where ##\rho_\mathrm{m}## is the magnetic monopole density. Only if the latter is zero, the magnetic field is divergence free.Khashishi said:Magnetic field lines don't terminate. They go in loops.
Khashishi said:Magnetic field lines don't terminate. They go in loops.
Magnetic monopoles are possible in the sense that they aren't ruled out by our known laws, but we haven't found them so they probably don't exist.
DrDu said:No, magnetic field lines can start and end on magnetic monopoles.
PeterPeter said:1. Wouldn't this mean that there are as many north monopoles as there are south monopoles? In other words they come in pairs?
If the universe is closed, yes.
2. Suppose then there were just two monopoles in the (multi)universe, wouldn't this mean that the field would look identical to that of a (gigantic) bar magnet?
Magnetic monopoles are hypothetical particles that have a single magnetic charge, either a north pole or a south pole, instead of the dual magnetic charges of traditional magnets.
Magnetic monopoles are considered to be beyond current scientific understanding because they have never been observed or detected in nature, and their existence would require a major revision of our current understanding of electromagnetism.
Magnetic monopoles are significant in physics because they would provide a link between electricity and magnetism, allowing for a more unified understanding of these fundamental forces. They could also have implications for theories such as quantum mechanics and the search for a unified theory of everything.
Scientists are searching for magnetic monopoles by using particle accelerators to create high-energy collisions, as well as using specialized detectors to search for the presence of magnetic monopoles in cosmic rays and other astronomical phenomena.
The potential applications of magnetic monopoles are still largely unknown, but they could potentially be used in advanced technologies such as magnetic monopole motors and more efficient magnetic storage devices.