Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 461
and thenbring a finger knucklenear to some part ofJohns person, e.g. thechin, nose, or a knuckle(Fig. 336); an electric spark will pass between the two and both willexperience a slight shock. The electricity which had accumulated onJohn in consequence of his insulation, escapes or is discharged… … Fig. 336. ELECTRICITY ACTS ACROSS A DIELECTRIC. 441 Section II. INDUCTION. 401. Electricity acts across a dielectric. Experiment 1. —Fig. 337 represents an empty egg-shell covered withtin foil to make it a good conductor. It is suspended from a glass rodby a silk thread, a. Electrify aglass rod and…
Physics
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