Theory and practice of the electric telegraph; a manual for operators and students (1875)
Churchill, Charles Henry, d. 1904. [from old catalog] · Oberlin, Ohio, Sherman & bros. · leaf 46
s of any number of Leyden jars, standingon tin-foil and having their knobs connected by a wire. Forconvenience, they are usually placed in a box, from one sideof which a knob extends, which has connection with theexternal coatings. 44. Use of the Coatings.—-1. Of what use are the coatings of the… … glass could only be charged slowly and irregularly in differ-ent parts. 2. Does the charge reside in the coating? The coatings merely conduct the electricity. If a jar hasmovable coatings they may be severally removed but theelectricity remains on the glass. 45. Polarization of th<i Glass—1. In…
Telegraph
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