Electricity for public schools and colleges (1891)
Larden, W. (Walter), b. 1855 or 6 · London : Longmans · leaf 304
of the circle {see note (iii.) at end ofthis section) be suspended at the centre, then, however much itbe deflected it will remain practically in the same strength of fieldas long as the current remains constant If then we can measure the strength of this field by ihe amountof deflexion, we measure… … Fig. i. the same current, pass into different strengths of field accordingto the extent of its deflexion \ in which latter case we couldmeasure the tields but notthe current. Fig. i. gives a generalview of the tangent galvano-meter. There is usually ashort needle provided witha long and light index…
Electricity
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