History of Electromagnetics

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History of Electromagnetics
Stuart A. Long Department of Electrical and
Computer Engineering University of Houston
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Thales of Miletus 600 BC
Oldest reference to any electrical
phenomenon   His teachings were passed down
orally until Aristotle wrote them down in the
form of a lyrical poem

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First person to have observed the attractive
properties of the mineral amber. Rubbing an
amber rod with rabbit fur caused small bits of
straw or feathers to be attracted toward it. The
Greek word for amber is elektron.
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• No real science involved
• All knowledge was qualitative
• No quantitative formulas

When you can measure what you are speaking about
and express it in numbers, you know something
about it. But when you cannot measure it, and
you cannot express it in numbers, your when you
cannot knowledge is of a meager and
unsatisfactory kind. Lord Kelvin
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Benjamin Franklin 1750
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Charles de Coulomb 1785
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Alessandro Volta 1800
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Hans Christian Oersted 1820
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Andre Ampere 1820
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Michael Faraday-- 1831
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James Clerk Maxwell 1873
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Heinrich Hertz 1888
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