Modern electric science had its beginning in the year 1600, when William Gilbert (1540-1603) published his epoch-making work, "De Magnete." He discovered that an attractive force could be produced by friction of glass, wax, sulfur, amber and other substances and called this force electricity from the Greek word for amber.
In 1730, Stephen Gray of London first insulated and electrified a human subject, and four years later, the Abbé Nollet first elicited a spark from such a subject. As early as 1746, the latter was treating persons for paralysis with insulation, sparks and shocks.
In 1746 Musschenbrock of Leyden constructed the Leyden jar, and in 1748, Jallabert of Geneva used it to treat a man who had had a paralyzed arm for fifteen years and brought about a cure. Benjamin Franklin at Philadelphia began to treat persons for paralysis with static electricity in 1752, thus starting a widespread medical vogue
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