Hi,Does anyone understand whether a bar magnet would shed some that its magnetism if it is bent and also broken into two?Thanks,WilsonMod Note: you re welcome don't short article multiple identical write-ups on this website.


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CliffordKNaked science Forum King!
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If you rest a magnet in two, you finish up with two smaller sized magnets.The stamin of a magnet is pertained to its size. So, the two smaller magnets will certainly be weaker 보다 the one initial magnet. However, the relationship might not it is in linear. For this reason a needle shaped magnet may be weaker 보다 a coin shame magnet of equal mass.Thus, the amount of your two damaged magnets may in truth be more powerful than the original.
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evan_auGlobal ModeratorNaked science Forum GOD!
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Magnets can additionally lose few of their magnetism if the method of break them involves:- significant vibration (eg continuously hitting them v a hammer)- Severe warm (eg cutting v a blowtorch)
Thanks guys...So, would breaking the magnet through bending the once, reason disruption to the alignment of some magnetic domains in the magnet?
Probably not significantly.I think that many magnets room formed, then magnetized v a powerful electromagnet. The magnetic field required come magnetize (or demagnetize) the magnet is better than the magnetic field within the magnet.I'm not sure about the old U shame magnets.


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As CliffordK says breaking a bar magnet into two would probably rise the full effective magnetism, while reducing the preferably intensity.Basically, the surface ar strength the a magnet is only a function of its shape, no its size.Disk magnets or rectangular magnets that are about the same height/width ratio provide a very strong field for their mass.Long slim magnets with poles in ~ each finish have a very intense magnetic ar at every pole, much more so 보다 a brief fat magnet, however only end a tiny area. They do have great reach though, you'll still have actually significant, although no terribly strong field at around one length, much additional than a much shorter magnet of the very same diameter.Disks are actually rather weak, they're also thin to give much ar intensity; although they will frequently be reasonably solid around the rim whereby the ampere currents deserve to be said to flow.If you desire really intense long-term magnets, developing them right into Halbach arrays works very well, the people record is end 5 Tesla (that's an ext than numerous MRI device that usage superconducting magnets) yet only over a very tiny volume undoubtedly relative to the magnets.I would certainly guess the snapping a magnet could cause a measurable decrease in strength; but it would count on the material; neodymium magnets more than likely not an extremely much in ~ all, might not be measurable, conversely, ferrites it might be rather a lot. Samarium magnets would certainly be fixed affected. AlNiCo magnets, girlfriend breath on lock hard and they shed strength, all bets are off ~ above those!