Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
then coveredwith the thin hemispheres,L and N, made of the samemetal, and provided withinsulating handles, it willbe found, on removing thecovers, that theii are electrified, and the sphere is deprived of everytrace of electrical excitement. This is due to the repulsive power of the fluid within-… … Figure 5.—That electricity accumulates only on thesurface, shown in a different way.—This figure represents a ribbon,T, of metallic paper, wound around a metallic axis, insulated withsilk threads; two sets of pith-balls are suspended by linen threadsat the lower end of the ribbon. If the ribbon is…
Physics · Astronomy
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