| 单词 | ballistic galvanometer |
| 释义 | > as lemmasballistic galvanometer ballistic galvanometer n. a moving-coil galvanometer whose coil has a large moment of inertia and a slow swing, so that the instrument responds to the quantity of charge passed (rather than the size of the current) and is suitable for measuring very small currents. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electric current > [noun] > measurement of galvanic currents > apparatus for > type of thermo-galvanometer1867 tangent galvanometer1873 ballistic galvanometer1875 tangent1905 string-galvanometer1909 tangent compass- 1875 W. Thomson in Proc. Royal Soc. 23 445 Weber's method, by the aid of electromagnetic induction and a ‘ballistic galvanometer’ to measure it,..has been used in the investigation. 1935 C. J. Smith Intermediate Physics (ed. 2) v. xliv. 736 An essential feature of a ballistic galvanometer is that the moving system shall not have moved from its zero position before the whole of the quantity to be measured has passed. 1975 W. R. Uttal Cellular Neurophysiol. & Integration ii. 17 In the ballistic galvanometer, the maximum deflection of the coil is proportional to the total amount of current that has flowed through the coil. The peak of the deflection is, therefore, a time integral of all the current produced by the driving voltage. < as lemmas |
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