A text-book of physics : with sections on the application of physics to physiology and medicine (1902)
Lehfeldt, Robert Alfred, 1868-1927 · London : E. Arnold · leaf 254
rger bobbin, resting on a foot,which can slide along the baseboard ; the ends of the secondarycoil are brought to the terminals s. The central cavity of thesecondary is large enough to allow of its being pushed completelyover the primary. When a current flows through the primaryit magnetizes the… … Fig. 87. the slide, a smaller and smaller fraction of it. This affordsa ready meansof adjusting the strength of the shocks (i. e. of theelectromotive force) in the secondary. The slide is graduated in,order to allow of regulating the strength accurately; but it mustbe remembered that the strengths…
Physics
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