Quote:
Originally Posted by Christ
QUICK addition to the magnet discovery field... Permanent magnets can lose their force through many many things... Rare Earth Magnets on the other hand create their own Magnetic force, and dont need to be charged.
You throw a PM at the wall, it could very well lose it's magnetic force.
You throw a REM at the wall, it could break in half, you'd just have two REM's now.
Please don't place physically created things in the same category as geographical anomalies.
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thats not true. rare earth magnets are magnets created from rare earth materials. you may be thinking of lodestone or magnetite. both of these, when thrown against a wall, could lose their magnetism just the same as a created magnet. all magnets are created the same, the natural ones were formed from the earths magnetic field, the manmade ones were formed from the magnetic field created around them. its the orientaintion of either the particles or ions or electrons within the material, if they are all nice and aligned, they create a field, if they are not, they dont, sharp impacts can send some out of alignment. continous repulsion can as well, think of a rope for this one, you pull it and its straight, the harder you pull the straighter it gets, you push it and is no longer straight.
again, any natural magnet was magnetised by the same principles that we used to create them in a lab. they can be destroyed the same ways. certain formulations of magnetic material are better at resisting demagnification, by repulsion or impact, but all WILL demagnatize eventually under these conditions. NIB (or neodynamin, or "rare-earth" magnets are ALL artificially created, by alloying iron with boron and neodynamin, then grinding that alloy to a fine powder and sintering it back together, this is a magnet blank, THEN they give it a field by exposing it to a very powerfull field, often once already installed in the product (how else would they get things made if they magnet stuck to everything))