ELECTRICITY
The science of
electricity has its roots in observation, known in 600 BC that a rubbed piece
of amber will attract a bit of straw.
Study of magnetism goes back to the
observation that certain naturally occurring stones attract iron.
The two sciences were separate until 1820
when Hans Christian Oersted saw the connection between them…an electric current in a wire will affect a compass
needle.
Around 600 BC Greeks found that by rubbing a hard fossilized resin
(Amber) against a fur cloth, it would attract particles of straw. This strange
effect remained a mystery for over 2000 years.
Around 1600,
William Gilbert, a physician who lived in London at the time of Queen Elizabeth I and
Shakespeare, studied magnetic phenomena and demonstrated that the Earth itself
was a huge magnet, by means of his "terrella" experiment. He
also studied the attraction produced when materials were rubbed, and named it
the "electric" attraction. From that came the word
"electricity" and all others derived from it.
During the 1800s it became evident that electric
charge had a natural unit, which could not be subdivided any further, and in
1891 Johnstone Stoney proposed to name it "electron."
When J.J. Thomson invented the particle
which carried that charge, the name "electron" was applied to it. He
won the Nobel Prize in 1906 for his discovery.
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