Electrometer

(noun.) meter to measure electrostatic voltage differences; draws no current from the source.

佛瑞德整理

• He arranged an electrometer, consisting of an iron needle poised on a pivot, by which to note the action of the magnet. 威廉·亨利·杜利特. 世纪发明.
• There was the Thomson reflecting mirror galvanometer and electrometer, while nearby were the standard cells by which the galvanometers were adjusted and standardized. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• Lesage, so as to enable him to work with only two wires and one electrometer at each station. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• To produce all the requisite signals with a single pith-ball electrometer, it was necessary to vary the durations of each divergence, and to combine several to form a single symbol. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• Each electrometer was to represent a letter of the alphabet, and they were to be brought into action by an excited glass rod. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.
• The first method that suggested itself was to transmit signals by means of pith-ball electrometers. 弗雷德里克·科利尔·贝克维尔. 伟大的事实.

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