write the origin of the magnet. in not more than 150 words
Answers
In his book, De Magnete(1600), scientist William Gilbert has mentioned techniques of artificially making magnets from steel. He used three techniques by which steel can be magnetized permanently:
Rub the steel needle with a block of loadstone along a particular direction starting from one end and ending at other
Forging powdered iron at high temperature under strong magnetic forces.
Leaving red hot iron bar to cool in Earth’s magnetic field for twenty years. This method only had theoretical basis and was not used for the purpose.
In 1820, the concept of electromagnetism was discovered by Hans CristainOrsted, who observed a deflection in the compass needle from magnetic north when electric current from the battery he was powering his set up with was switched on and off.Electromagnetism
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