Elementary treatise on electricity and magnetism : (1905)
Foster, G. C. (George Carey), 1835-1919, Joubert, J. (Jules François), 1834-1910, Porter, Alfred W. (Alfred William), 1863-1939 · London ; New York ; Bombay : Longmans, Green, and Co. · leaf 553
true leads.The remai^nder of the resistance in the adjust-able arm is equal to the resistance of the plati-num wire at the temperature of the measure-ment. To deduce the temperature from a resist-ance measurement it is necessary to firststandardise the thermometer by measuringits resistance at two… … 100 R, Rn This assumes that the change of resistance with temperature followsa linear law. When greater accuracy is required it may be obtainedby standardising at three known temperatures and assuming that 532 TECHNICAL APPLICATIONS [465 the resistance varies accoiding to a parabolic foimula. In…
Electricity · Magnetism
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