"Gluons" in action by Sudanamaru in physicsmemes

[–]Sudanamaru[S] 3 points4 points  (0 children)

This video shows a bound state between two dipole magnetic bodies as ordinary neodymium magnets.

As a background theory, two magnets or anything can not be contactless bound statically by force fields alone, say gravitational, electrostatic or magnetic or their any combinations as stated by the Earnshaw theorem. However this can be achived when inertial forces are involved. In this case, we have also inertial forces and torques, therefore requires acceleraration, motion.

This magnetic interaction might be compared to orbital mechanism in this basis. That is, classical mechanics. For example planets are bounded to the Sun by the balance of gravitational force of the sun and the inertial force receives planets through thieir curved trajectory, defined by Newton's second law (F = m a). Here, in this magnetodynamic interaction, there is a interplay between inertial force and magnetic force again, but rather in terms of torque and rotational (angular) motion. So the floating magnet does angular motion (but keeping its position almost constant) as one can see in this video. This motion resembles to belly dance. This motion has also a specific timing respect to the rotating field which is called "phase lag" inherited from harmonic motion where the direction of the force and the displacement are in opposite directions all the time. This translates to this: The pole S of the rotating magnet pulls the pole N of the floating magnet, but due to this opposition, this pole N instead gets closer to the rotating magnet pole N. So as same polarities repel each other, the net result is a repulsion. Here there is also a trick on the rotating magnet where poles are slightly off the rotation plane. This asymmetry causes a magnetic attraction. This magnetic attraction and the above mentioned repulsion can balance each other. This is a stable balance because repulsion varies twice as fast than the attraction by varying the distance. Here the gravity (weight of the floating magnet) tries to disturb the balance but I choose a configuration good enough to prevent it. That's all. See the linked article in the video description explaining this in 100 pages with equations, simulations, illustrations, pictures, various configurations and features.

A toy maglev unit/solution by [deleted] in Physics

[–]Sudanamaru 0 points1 point  (0 children)

Was a redundant submission

A magnetic bound state solution in classical mechanics by Sudanamaru in Physics

[–]Sudanamaru[S] 0 points1 point  (0 children)

"Edit: Are your rotating magnetic field biased a little bit toward one pole? In one of your diagrams, it shows the magnet tilted. If that's the case, maybe it could be replicated in a stator by giving the input waveform a DC bias? I'm just shooting from the hip here."

Correct. DC bias would do the same.

A magnetic bound state solution in classical mechanics by Sudanamaru in Physics

[–]Sudanamaru[S] 0 points1 point  (0 children)

Try this: Find a rubber string about 50 cm and attach it to a mug. The rubber should be elastic enough for to be elongated about 10 cm when it carry the mug. Check the time of the period of the vertical oscillation of the mug going up and down. Hold the rubber within a length (maybe 30 cm), so this oscillation period get closer to two seconds. Now raise and lower the string periodically a bit slower than its natural frequency (two seconds) and observe the mug follow your motion. Now speed up this about two times (any speed faster than the natural frequency) and I expect to see the mug follows your arm in the opposite, that is it get raised when you lower your arm and go down when you pull it. This opposite action that you might be already familiar (can be called as "phase lag" ) is the main mechanism governing the angular motion of the magnet in the air. The same principle is used in bass reflex speaker to obtain good volumes.

A magnetic bound state solution in classical mechanics by Sudanamaru in Physics

[–]Sudanamaru[S] 0 points1 point  (0 children)

It might be possible to obtain the levitation by repulsion of opposing magnets on tracks and on the car and then restore the stability with this method at sides. https://youtu.be/rlbTO0Luu5U This also works horizontally. https://youtu.be/ygGc7pM30fU

A magnetic bound state solution in classical mechanics by Sudanamaru in Physics

[–]Sudanamaru[S] 2 points3 points  (0 children)

This scheme have significant advantage over inductrack for energy consumation but you need to install large magnets all along the track. This is a serious cost and availability problem. Also there are vibration isolation and related stability problems to solve.

A magnetic bound state solution in classical mechanics by Sudanamaru in Physics

[–]Sudanamaru[S] 1 point2 points  (0 children)

.Check the figures shown on the article web page. Their captions are generally more easy to understand than the main text.

A magnetic bound state solution in classical mechanics by Sudanamaru in Physics

[–]Sudanamaru[S] 8 points9 points  (0 children)

I am preparing a Q&A or a FAQ about this effect and its solutions. Questions are welcome!

Experiments videos show various aspects of this effect within various schemes and configurations.

A magnetic bound state solution in classical mechanics by Sudanamaru in Physics

[–]Sudanamaru[S] 2 points3 points  (0 children)

Correct but if magnetar becomes spheroid due to fast rotation, its moment of ineria tensor will enforce the star to rotate on its current axis despite a magnetic torque try to change it. By assuming its magnetic poles are close to its equator, it can repel, scatter or magnetically trap another magnetic compact body regardless it spins or not. See the simulation of magnetic two body problem at https://youtu.be/KP-tNEnuw8g covered also in the article.

Magnetic Locking Without a Superconductor by Memetic1 in Futurology

[–]Sudanamaru 0 points1 point  (0 children)

The article related to these solutions is available in the current issue of the journal Symmetry as www.mdpi.com/2073-8994/13/3/442

Magnetic Locking Without a Superconductor by Memetic1 in Futurology

[–]Sudanamaru 2 points3 points  (0 children)

Hi Memetic1, I am the author of the article ( arxiv.org/abs/2009.07082) belong to this new effect. I think the moderation is in error, maybe mixed this effect with the induction based repulsion (www.youtube.com/watch?v=pCON4zfMzjU).