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Natural magnet: A magnet which occurs naturally in the Earth, such as magnetite.Artificial magnet: A magnet in which magnetic properties have been imparted artificially, shaped into forms such as bar, horseshoe, or cylindrical magnets.Magnetic materials: Materials such as iron, cobalt, steel, and nickel that are attracted by a magnet.Non-magnetic materials: Materials such as glass, wood, plastic, aluminium, copper, and brass that are not attracted by a magnet.North pole: The end of a freely suspended magnet which points towards the geographic north pole.South pole: The end of a freely suspended magnet which points towards the geographic south pole.Electromagnet: A temporary magnet consisting of a soft iron core wound with an insulated copper wire that produces a magnetic field when an electric current passes through it.Electromagnetism: The branch of physics which deals with the magnetic effect of electric current.Core: The soft iron piece inside an electromagnet on which an insulated copper wire is wound.Permanent magnets: Magnets that retain their magnetic properties even without the influence of an external magnetic field.Temporary magnets: Magnets that behave as magnets only in the presence of a strong magnetic field.Electromagnetic induction: The phenomenon of producing an electric current in a conductor due to a change in the magnetic lines of force associated with the conductor.Induced current: The electric current produced in a conductor by the process of electromagnetic induction.Galvanometer: An instrument used to detect and measure small electric currents.
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Chapter: 08. Magnetism
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