Electromagnetic
Brook Parker
What is magnetism?
The magnetism is the chemical element of atomic number 12. A physical phenomenon produce by the motion of replace electric change resulting in attractive and force between object.
what are magnets?
Magnets are things that connects with metal. A piece of iron.
information about magnets!
Electromagnets
Of or relating to the interrelation of electric currents or fields and magnetic fields.
What are temporary magnets?
A temporary magnet is a magnet that stays magnetized only for a relatively short period of time. Non- electromagnetic temporary magnets tend to be made of soft magnetic materials, like annealed iron or steel.
What are permanent magnets?
A permanent magnet is a magnet that is permanent, in contrast to an electromagnet, which only behaves like a magnet when an electric current is flowing through it. Permanent magnetsare made out of substances like magnetite (Fe3O4), the most magnetic naturally occurring mineral, or neodymium, a powerfully magnetic synthetic substance. The Earth itself is a hugepermanent magnet, though its magnetic field is quite weak relative to its size. Humans have used the magnetic field of the Earth for navigation since the compass was invented in ancient China.
More information about magnets
What are superconductors?
One of the unwritten rules of physics says you can't get something for nothing; at best, you can manage a fair exchange rate between how much energy you pump into a system and how much you coax out of it.
Who discovered magnets?
Magnesia
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