The absolute measurement of inductance . Fig. 5. the current in the circuit ABC. In the condenser current, however,the harmonics are magnified in proportion to their order, the seventhharmonic in the condenser current being seven times as great, in pro- 136 BULLETIN OF THE BUREAU OF STANDARDS. [, no. 2. portion to the fundamental, as in the electromotive force, and hence7 X or times as great as in the current through 4 shows the current in a condenser due to such an electromotive. Fig. force as that of fig. 3, showing the prominence of the higher harmonics,especially
The absolute measurement of inductance . Fig. 5. the current in the circuit ABC. In the condenser current, however,the harmonics are magnified in proportion to their order, the seventhharmonic in the condenser current being seven times as great, in pro- 136 BULLETIN OF THE BUREAU OF STANDARDS. [, no. 2. portion to the fundamental, as in the electromotive force, and hence7 X or times as great as in the current through 4 shows the current in a condenser due to such an electromotive. Fig. force as that of fig. 3, showing the prominence of the higher harmonics,especially those of thirteen and fifteen times the fundamental. In asimilar manner we should expect that if there are any small harmonics ROSA. ABSOLUTE MEASUREMENT OF INDUCTANCE. 137 of these frequencies in the current through the circuit ABC, theywould be multiplied by 114 and 153, respectively, in such a condensercurrent in parallel with ABC On the other hand, if no such har-monics are found in the condenser current we may be sure that thesmall values found by analysis in the inductive current were, as wesupposed, residual errors.
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