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luxtpm7
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Im working at this at the moment on this and i was wondering if is posible to reverse polarity of a permanent magnet without expending huge ammounts of energy and keep that polarity
usp8riot said:Newton's law applies here. You would have to have a force equal or greater than the magnetic field of the magnet to which it is applied.
usp8riot said:Yes, it maybe seems vague if you don't know the concept. All energy can be negated with energy of equal or greater value. It is a scientific fact. What is wrong with my statement? Did that not answer his question. Short answer, no. Not without equal or greater work. And I take it as 'huge' amounts of energy mean more than the original energy the magnet is exerting. Is that still too vague?
Say what? You give the impression that you don't know what Newton's laws are.usp8riot said:Newton's law applies here. You would have to have a force equal or greater than the magnetic field of the magnet to which it is applied.
Say what?All energy can be negated with energy of equal or greater value.
It generally takes more energy to reverse the polarity of a magnet than it did to originally magnetize it, which should make sense since you have to reverse the domains.
It requires a very strong magnetizing field.
Yes it is, welcome to PF. Consider yourself initiated. I kind of understood what you were saying, but when helping others here, it's a good idea to try to make the statement so it will be fairly clear to the OP (original poster). I understood your metaphor of Newton's Laws, but that might have been a pretty big leap for the OP to understand.usp8riot said:Geez, is this some sort of newb annitiation ritual?
A permanent magnet is a type of magnet made from a material that retains its magnetic field even after being removed from a magnetic field generator.
Polarity refers to the direction of the magnetic field lines in a magnet, which determines its north and south poles.
Yes, it is possible to reverse the polarity of a permanent magnet by exposing it to a strong external magnetic field in the opposite direction, causing the magnetic domains within the material to align in the opposite direction.
Yes, the polarity of a permanent magnet can be reversed permanently by exposing it to a strong external magnetic field for a prolonged period of time, or by heating it to its Curie temperature and cooling it in a strong magnetic field.
Reversing the polarity of a permanent magnet can be useful in various applications, such as in electric motors, generators, and magnetic storage devices, where the direction of the magnetic field needs to be changed for specific purposes.