Wright, Mark R., 1854- · London : Longmans · leaf 169
Fig. 155. i6o Frictional Electricity Cylinders made of drawing-paper (preferably of gilt paper),or dry egg-shells, can be conveniently used for the light bodies ;they roll after the rubbed bodies. The rubbed resinous bodies,or glass, will also attract tufts of cotton, or particles of dust float-ing… … Fio. 15S. Balance a lath of wood upon an inverted flask, or upon an egg.The rubbed substances attract it (fig. 156). The attraction is mutual;wood or other substances attractthe rubbed bodies. Rub the ebonite with flannel,or the glass with silk, and placeeither in a stirrup (fig. 157). Holdthe…
Physics
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