galvanometer
(gælvəˈnɒmɪtə(r))
[f. galvano- + meter.]
An apparatus for detecting the existence and determining the direction and intensity of a galvanic current.
| 1802 Med. Jrnl. VIII. 253 The piles..showed no remarkable difference in their effects; however, I do not deny that some difference may be perceived by means of the Galvano⁓meters. 1830 Herschel Stud. Nat. Phil. 356 The galvanometer..an instrument whose range of utility lies among electric forces which we have no other means of rendering sensible. 1832 Nat. Philos., Electro-Magnet. viii. §125. 44 (U.K.S.) For the purpose of comparing the intensities of two electrical currents, an instrument has been contrived, which has been termed the Differential Galvanometer. 1862 Lytton Str. Story I. 165 If you clutch the cylinder firmly with the right hand, leaving the left perfectly passive, the needle in the galvanometer will move from west to south. 1877 Rosenthal Muscle & Nerves 162 Another form of apparatus, called the tangent galvanometer. 1879 G. B. Prescott Sp. Telephone p. iii, Sir William Thomson..has given us the beautifully sensitive mirror galvanometer. |
Hence ˌgalvanoˈmetric, ˌgalvanoˈmetrical adjs., pertaining to the galvanometer or to galvanometry. galvaˈnometry, the measurement of galvanic currents.
| 1845 Grove Contrib. Sc. in Corr. Phys. Forces (1874) 290 The second gave not the slightest galvanometric deflection. 1875 A. Gamgee tr. Hermann's Hum. Phys. (1878) 287 The muscular current may be demonstrated by methods other than the galvanometric. 18.. Engineer LXV. 510 (Cent.) The parts of the stand include..the necessary clamping screws for electrical and galvanometrical connections. |