- #1
Hawksteinman
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https://phys.org/news/2017-10-effect-electromagnetism-years.html
This was in my FB feed, was wondering how big this is
This was in my FB feed, was wondering how big this is
New effect of electromagnetism discovered?
- Thread starter Hawksteinman
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In summary, a new application of Maxwell's theory has been discovered where electromagnetism can be used to create a trap for particles in 1 dimension. While the basic principles of this effect were already understood, it took 150 years for its applicability to be realized. However, this should not be considered a new effect as it is consistent with Maxwell's theory. The original paper by the authors provides a detailed explanation of this effect and its application.
- #2
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Why should this be "a new effect"? It's all well understood within good old Maxwell's theory. So it's not new. Maybe the work done with this kind of trap is new, but not the basic principles. It would rather be a mindblowing discovery if something electromagnetical would be discovered that contradicts Maxwell's theory, which in its quantum version is among the most accurate ever discovered physical theories of mankind!
- #3
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I think it's more accurate to say a new application has been discovered, but not any new physics.
Pretty cool that this was the basis of an experimental exercise in the most recent International Physics Olympiad. :-)
Pretty cool that this was the basis of an experimental exercise in the most recent International Physics Olympiad. :-)
- #4
jerromyjon
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It only took 150 years to realize this new application.vanhees71 said:
The plausibility of the effect might have been well understood but it's applicability has finally been realized. Is this similar to a "magnetic bottle" in 3 dimensions as this is 1 dimension?- #5
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Sure, I don't want to diminish the realization of this new kind of trap, but it's wrong to claim that it's a "new effect". The original paper by the authors is marvelous to read (also download the supplement):
http://aip.scitation.org/doi/abs/10.1063/1.4978876
You can understand the theory treated in this paper after a good course on classical electrodynamics (perhaps after reading a bit about the method of conformal mappings for 2D static em. fields).
http://aip.scitation.org/doi/abs/10.1063/1.4978876
You can understand the theory treated in this paper after a good course on classical electrodynamics (perhaps after reading a bit about the method of conformal mappings for 2D static em. fields).
1. What is the new effect of electromagnetism that has been discovered?
The new effect of electromagnetism is called spin-orbit torque, which describes the transfer of angular momentum from the electron spin to its orbital motion. This effect has been observed in certain magnetic materials and has potential applications in spintronic devices.
2. How was this new effect of electromagnetism discovered?
The effect of spin-orbit torque was first predicted by theoretical physicists and then experimentally observed by scientists using advanced techniques such as X-ray magnetic circular dichroism and spin-polarized electron microscopy.
3. What are the potential applications of this new effect of electromagnetism?
Spin-orbit torque has potential applications in spintronic devices, which are electronic devices that use the spin of electrons rather than their charge to store and transfer information. This could lead to faster and more efficient devices for data storage and processing.
4. How does this new effect of electromagnetism differ from other known effects?
Spin-orbit torque differs from other known effects of electromagnetism, such as magnetoresistance and the Hall effect, because it involves the transfer of angular momentum rather than electrical current. It also occurs in materials with strong spin-orbit coupling, which is a measure of how the spin and orbital motion of electrons are interdependent.
5. What further research is needed to fully understand this new effect of electromagnetism?
Although spin-orbit torque has been observed and studied, there is still much to learn about its underlying mechanisms and potential applications. Further research is needed to fully understand this effect and its implications, which could lead to advancements in spintronics and other fields of science and technology.
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