Elementary lessons in electricity and magnetism (1906)
Thompson, Silvanus P. (Silvanus Phillips), 1851-1916, Schwetzky, Otto H. L. [from old catalog] · Chicago, Thompson & Thomas · leaf 47
perty ofattracting light bodies. If a dry silk thread Ts used,however, no electricity will flow down to the bullet. Gray even succeeded in transmitting a charge ofelectricity through a hempen thread over 700 feet long,suspended on silken loops. A little later Du Faysucceeded in sending electricity… … Fig. 17 This distinction cannot, however, be entirely main-tained, as a large class of substances occupy an inter-mediate ground as partial conductors. For example, drywood is a bad conductor and also a bad insulator; itis a good enough conductor to conduct away the high-potential electricity…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
