Are electromagnets actually used as magnets or just to strengthen other magnets? What does the pulse of an electromagnet do? What is a tesla field?
Electromagnets are composed of a metallic core of magnetic material, usually iron, steel, or cobalt, wrapped in wire. When electricity is passed through the wire, the metallic core generates a magnetic field. The strength of the electric current and the size and composition of the core will determine the strenght of the magnetic field. I believe by pulse of the electromagnet you are refering to the electromagnetic pulse generated by a nuclear explosion. this really doesn't have anything to do with electromagnets; in effect it is a burst of radiation that disables electronic equipment following a neculear explosion Tesla fields are the invention of science fiction writers who want a cheap way of explaining force fields. Magnetic fields are measured in tesla units, though.
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reg. magnets(natural iron) are charged and magnetize all the time. electro-magnets are not charged normally and only magnetize when a current is sent thought a wire that is looped around something. the something does'nt even have to be metal, because the wire is making the magnetic field. pulses are from alternating current, but you can make an elec. mag. with regular direct current from a battery.
Milan would do but you have to study and learn to speak milano otherwise you would not in joy living in Milan
