The standard electrical dictionary : a popular encyclopaedia of words and terms used in the practice of electrical engineering (1898)
Sloane, T. O'Conor (Thomas O'Conor), 1851-1940 · London : Crosby Lockwood and Son · leaf 275
Fig. 182. Principle of Reflecting Galvanometer. … Fig. 183. Reflecting Galvanometer. a mirror attached to the needle or to a vertical wire carrying theneedle. A lamp is placed in front of the instrument facing themirror. The light of the lamp is reflected by the mirror upon ahorizontal scale above the lamp. An image of a slit or of a wiremay be…
Electricity
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