Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 470
)Cx:JzJooocD( i03O tuOJ I01.D IU.10 1-^ 2Si iO^ l0 ^DOOOOOOOC … Bridge Key and Connections. plished by means of the bridge key, shown in Fig. 435, to-gether with its connections. This is in realit}? nothing more than a double keyarranged to control the two parts of the circuit independ-ently, the upper key being arranged so that after it is closedit may be…
Physics · Lantern projection · Electric apparatus and appliances
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer04inte-450-220.webp)
