Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 887
nt is the beautiful siphon recorder, also invented by Sir WilliamThomson This apparatus is so arranged as actually to delineate upon paper the very irregulaimovements of the minor-galvanometer needle. Fig. 4091 shows the form of siphon recorder in useupon the French Atlantic cable. The apparatus… … Within the coil is a stationary soft-iron core a, which is powerfully magnetized by induction from thepoles N S. The coil bb swings upon a vertical axisconsisting of a fine wire / f\, the tension of which isadjustable at k. The received currents pass throughthe suspended coil, the suspension wire…
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