Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 617
He closes the circuit, and theelectric current instantly: fills the wire from Boston to NewYork. It magnetizes a; a draws down the lever 6, andpresses the point of a style on a strip of paper, c, that isdrawn over a roller. The operator ceases -to press upon thekey, the circuit is broken, and… … Fig. 484. he press upon the key long enough to count three, the pointof the style will remain in contact with the paper the samelength of time ; and, as the paper is drawn along beneath thepoint, a short straight line is produced. This short line iscalled, a,dash. These dots and dashes constitute…
Physics
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
