Elementary treatise on electricity and magnetism (1903)
Foster, George Carey, 1835-1919, Joubert, Jules François, 1834-1910. Traité élémentaire d'électricité, Porter, Alfred William, 1863- joint author · London, New York, Longmans, Green, and co. · leaf 154
the uncoated sur-face. Each discharge givesrise to very beautiful ramifi-cations. The discharges whichtravel thus over the surfaceof the glass leave a permanenttrace, which can be made visible by breathing on the surface so asto deposit a little moisture. The propagation of the spark along the… … B Fig. 83. 132 EFFECTS OF THE DISCHAKGE [93- Leyden jar, the outer coating of which, instead of being con-tinuous, consists of metal filings fastened on with varnish. Theinner coating is prolonged by a tongue of tinfoil to within a shortdistance from the outer coating. Every spark which passes…
Electricity · Magnetism
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