Electricity for public schools and colleges (1891)
Larden, W. (Walter), b. 1855 or 6 · London : Longmans · leaf 446
rst through the sending instrument, deflecting its needlein one or the other direction. It passes thence through the linewire, and afiects in a corresponding manner the needle of thereceiving instrument. • By means of a suitable code both this and the last instrumentare used to transmit verbal… … Fig. iv. 420 ELECTRICITY CH XXV. corresponding signal in the needle instrument ; and the dash, towhich corresponds the deflexion to the right of the needle. The signals answering to the letters of the alphabet are variouscombinations of the above elements, the only principle observedbeing that…
Electricity
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