准备电刑。
The committee appointed by Prison Superintendent Austin Lathrop to test the efficiency of the electrical appliances and dynamos placed in the New York State prisons for the execution of condemned murderers recently made its report. The method employed by the committee to determine the electromotive force of the dynamos was to measure, by means of a Cardew voltmeter, the full potential along a resistance of German silver wire. The committee says:
“With this end in view were contructed four frames, each holding 100 ohms of No. 15 German silver wire. The 100 ohms were divided into portions of 10 ohms each. In parallel with each of these portions was put a fifty-volt lamp of 20-candle power. The object of the wire was to maintain the potential when the Cardew voltmeter was applied to the lamps. The voltage between each lamp was taken with a Cardew voltmeter, which had been previously calibrated.
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