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)
all spheres of metal, F and H, at some distanceapart. The upper one is connected with the primeconductor by the rod, T, and the lower one communicates with theearth. At the bottom of the glass is attached a pipe (provided with astop-cock, N) by which the globe is attached to the air-pump. Having… … 368 ELECTRICITY. structioii. If the experiment is made in the dark, a beautiful yiolet-colored light, of an oval form, will be seen between the balls, as shownin the figure. The rarer tlie air within the glass, the more globular will be theform of the light. ACCUMULATION OP ELECTRICITY. 690. Latent…
Physics · Astronomy
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