"Magnets" Experiments and Information!!!
Magnets are used in many applications from the Compass to complex electronic devices like your computer. There are two main types, permanent and temporary electromagnets. Permanent magnets are made of Iron, Nickel, or Colbalt, and mixtures of these elements along with Aluminum and other extra additives. Only materials made of these elements are attracted to magnets. An electromagnet is made with an Iron (or mixed) core, wrapped with layers of insulated wire. When an electric current passes through the wire, a magnetic field is created until the current flow stops. A magnetic field is created by a moving electric field. A moving magnetic field produces an electric field, the reverse effect. A permanent magnet is formed when the electric field of atoms of Iron, Nickel, or Colbalt, align in rows to create a magnetic field with North and South poles. In an electromagnet, the atoms in the core align when the current is on then rearange to their random state when the current stops.
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