The Boston school compendium of natural and experimental philosophy .. (1837)
Parker, Richard Green, 1798-1869 · Boston : Marsh, Capen & Lyon · leaf 167
silentlyand produce but little effect. Can an insulated jar be charged ? 390. Of what is an electrical battery com-posed I How are the inner coatings of the jars connected together i How are theouter coatings connected ? In what way is the battery charged. 391. What isthe jointed discharger . What… … ELECTRICITY. 157 392. Metallic rods, with sharp points, silently attractthe electric fluid. A Leyden jar, or a battery, may be silently discharged by holdingthe finest needle in the hand towards the knob. It is on this princi-ple that lightning-rods are constructed. The electric fluid is silent-ly…
Physics
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