Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 541
in practical telegraphy. The most familiar instanceof induction is probably well known to the reader in the Leyden jar. Fig. 255,Avhich is simply a wide-mouthed bottle of thin glass, covered internally and■externally with tin-foil to within a few inches of the neck. The inner coat-ing communicates… … Fig. 254.The Gold-leaf Electro-scope. 490 ELECTRICITY. suffice usually to charge the conductor to the fullest extent; but if it beput in communication with the knob of a jar, a great many more turns willbe required to attain the same charge in the conductor, and the excess ofelectricity represented…
Inventions
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