Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 700
cars on a raili .from • rail to another. 1 of operatic , mo -it th.; ! at which point thej form part of the line of rail ■ : U /• /■ r ; a i I /- i- ■ 1 to tIi.- Bhort arm of a lei er I, .v throwing this 1I or 1 ■ I» th( i in either part of the straight and right hand ■ \, B A, or part of the… … 692 TELEGRAPH. TELEGRAPH, History of the. Soon after the discovery of the Leyden jar, in 1747, it was observedthat the shock, passed through twelve thousand feet of wire, affected persons placed at either extremity,apparently at the same instant of time. The idea of the instantaneous passage of…
Mechanical engineering
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