Wright, Mark R., 1854- · London : Longmans · leaf 182
der :— Insulators. —Shellac, resins, sulphur, w^ax, glass, silk, airand dry gases, lime. Semi-conductors.—Ice, dry wood, powdered glass. Conductors.—Cotton, linen, water, acids, charcoal, metals. The insulating power of the different kinds of glass varies, andall glass becomes a conductor when very… … Fig. 169. dry silk fibres, or by threads of shellac; heavier bodies can See Appendix. 174 Frictional Electricity be placed in a stirrup and suspended by a thin silk ribbon,or they can rest upon stems of varnished glass, shellac,sealing-wax, or upon rods of ebonite. An insulating stool isreadily…
Physics
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
