Magnets phenomena, please give explanation

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Discussion Overview

The discussion centers around the behavior of magnets, specifically the phenomenon of polarity reversal and the underlying mechanisms that may explain this behavior. Participants explore various hypotheses regarding the nature of magnetic fields and configurations, as well as the implications of these observations.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant questions the validity of a friend's claim that magnets have a "centralized force field," suggesting skepticism towards this explanation.
  • Another participant proposes that the observed behavior of magnets switching from repelling to attracting could be due to the presence of multiple poles on the surface of the magnets.
  • A different viewpoint describes a configuration where long magnets extend radially from a hub, with alternating north and south poles oriented along the circumference, leading to the observed attraction and repulsion.
  • One participant mentions the possibility of using an electromagnet with a polarity switch to achieve similar effects, although they express uncertainty about the specifics without audio from the video.
  • Another participant confirms that they have observed the magnets switching behavior without any tricks, emphasizing the direct experience with the magnets in hand.

Areas of Agreement / Disagreement

Participants express differing views on the explanation of the polarity reversal phenomenon, with no consensus reached on the underlying mechanisms or the validity of the claims made by the friend referenced in the initial post.

Contextual Notes

Participants note the complexity of the magnetic configurations and the potential for multiple pole arrangements, but do not resolve the specifics of the magnetic behavior or the assumptions behind their claims.

bennyhagen
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Hi everyone,

Can someone please explain to me what happens here? Why does the polarity reverse? My friend explains it like this, I quote: "as opposed to what is taught in schools, magnets have a centralized force field". Is there something to this? What happens here?

https://www.facebook.com/photo.php?v=10203631144239062
 
Engineering news on Phys.org
By the way, this is not a joke. I know about the bs surrounding this field, I just would like to know what exactly happens here.
 
facebook says "content unavailable"
 
Sorry my fault.
 
bennyhagen said:
Hi everyone,

Can someone please explain to me what happens here? Why does the polarity reverse? My friend explains it like this, I quote: "as opposed to what is taught in schools, magnets have a centralized force field". Is there something to this? What happens here?

https://www.facebook.com/photo.php?v=10203631144239062

No idea what your friend is trying to say, but the beginning of his statement would make me disregard the rest of his statement as BS.

I can think of a couple ways to make that trick "magnetic wand" thing. One would be to but batteries and an orientation switch to change the polarity of an electromagnet (the end toward the target). I don't have sound on the laptop I'm watching the video on, though, so there are probably other clues if I could listen to the explanation.

Jim -- Do you have a Facebook account? I had to sign into my account to see the video.
 
It's just that the magnets repel each other, then as he turns it upside down as shown, they attract each other. Isn't that only supposed to work with the opposite poles? Or is it like there's a different pole at each corners as well? If you know what I mean.
 
Last edited:
bennyhagen said:
It's just that the magnets repel each other, then as he turns it upside down as shown, they attract each other. Isn't that only supposed to work with the opposite poles? Or is it like there's a different pole at each corners as well? If you know what I mean.

Did you understand what I said about a way to do this magician's trick?
 
Yes, but I'm the guy filming it, there is no such trick. I have the magnets in my hand right now, without the frames, just the magnets. It still works. I turn them as shown in the video and they switch from repelling to attracting each other, like if I'd turn one to the opposite pole.
 
thanks Berkeman--
i don't frequent facebook, but the video did play..

my guess would be he has magnets with multiple poles on their surface
as in lower right image

bunch.gif

courtesy integrated magnetics, http://www.intemag.com/magnetics_101.html



so one way the poles attract, other way they oppose

but it's sure a complex structure ! One wonders what sort of gizmo it came out of.
 
  • #10
Not sure if this was said already.

Seems obvious to me.

I describe the configuration as long magnets extending radially from a hub.

N and S are oriented along the circumference, that is through the thinnest part of the magnet, rather than radially, along the longest axis (which is the "normal" orientation). So one wide flat side is north and the other is south. As you go around the circumference you see NSNSNSNSNS etc.

In the pictures above, it would be "parallel to thickness".

A compass can prove this, as can a "normal" magnet with known poles (which is what a compass is).
 

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