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The history of magnetism dates back to earlier than 600 B.C., but it is only in the twentieth century that scientists began to understand it and developed technologies based on this understanding.
The history of magnetism dates back to earlier than 600 B.C., but it is only in the twentieth century that scientists began to understand it and developed technologies based on this understanding.
William Gilbert (15441603) was the first to systematically investigate the phenomenon of magnetism using scientific method.
William Gilbert (15441603) was the first to systematically investigate the phenomenon of magnetism using scientific method.
He also discovered that Earth is a weak magnet.
He also discovered that Earth is a weak magnet.
Danish physicist Hans Oersted (17771851) suggested a link between electricity and magnetism.
Danish physicist Hans Oersted (17771851) suggested a link between electricity and magnetism.
James Clerk Maxwell (1831-1879) proved that electricity and magnetism represent different aspects of the same fundamental force field.
James Clerk Maxwell (1831-1879) proved that electricity and magnetism represent different aspects of the same fundamental force field.
In electrostatics you have learnt about the relationship between the electric field and force due to electric charges and electric dipoles.
In electrostatics you have learnt about the relationship between the electric field and force due to electric charges and electric dipoles.
Analogous concepts exist in magnetism except that magnetic poles do not exist in isolation and we always have a magnetic dipole or a quadrupole.
Analogous concepts exist in magnetism except that magnetic poles do not exist in isolation and we always have a magnetic dipole or a quadrupole.
In this Chapter the main focus will be on elementary aspects of magnetism and terrestrial magnetism.
In this Chapter the main focus will be on elementary aspects of magnetism and terrestrial magnetism.
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