Spon, Ernest, Haldane, Robert, Lock, Charles G. Warnford (Charles George Warnford), 1853-1909 · London ; New York : E. & F.N. Spon · leaf 210
s to use as materials for the current regu- current-regulator of Eeis, consisting of one piece of platinum resting lightly lator, either spongy platinum, carbide against another, is imperfect, except of platinum, boron, coke, carbon, or when, as in some forms of Keis's instru- Fig. 109. ment, one… … they are protected from the moisture of wherein the two contact pieces are held the breath by some portion of the con- upon springs s ; one of these springs is ductors or electrodes fixed to an adjusting frame b, and the Fig. 110. projecting between other to an insulating block /i, for it is tlie…
Workshop recipes · Technology · Industrial arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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