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)
, to vary the distance between the balls. It is also provided withan insulating handle. To discharge the Leyden jar with this instrument, it is only neces- ELECTRICITY. 371 sary to place one ball in contact with the outer coating, S, and the-other with the button, R. 697. Figure 24.—The universal… … The two conducting-rods, sliding in the joints E and F, and providedwith connecting chains, are mounted on insulating supports, N and N ;by which the electrical fluid may be made to pass through any sub-stance placed upon the table, H. The table may be elevated or low-ered by means of the…
Physics · Astronomy
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