Elementary lessons in electricity & magnetism (1895)
Thompson, Silvanus P. (Silvanus Phillips), 1851-1916 · New York and London, Macmillan and co. · leaf 12
Fig. l. was originally discovered to be a property of amber, or,as the Greeks called it, yjXtKTpov, which is mentioned byThales of Miletus (b.c. 600), and by Theophrastus in histreatise on Gems, as attracting light bodies when rubbed.Although an enormous number of substances possess thisproperty,… … About the year 1600, Dr. Gilbert of Colchester discovered by experiment that notonly amber and jet, but avery large number of sub-stances, such as diamond,sapphire, rock-crystal, glass,sulphur, sealing-wax, resin,etc., which he styled elec-trics* possess the same pro-perty. Ever since his timethe…
Electricity
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