| 单词 | kelvin replenisher |
| 释义 | > as lemmasKelvin replenisher 2. A device for increasing or maintaining an electrostatic charge. Also Kelvin replenisher. Now historical.A replenisher consists of two curved metal plates at each end of a rotating arm that carries them between two larger fixed plates. The two outer plates are given opposite charges, which induces inversely opposite charges on the inner plates. Metal wipers or springs on the plates mean that when the inner plates make a half turn their induced charge is transferred to the similarly charged outer plate, whose total charge is thereby increased. ΘΚΠ the world > matter > physics > electromagnetic radiation > electricity > electric charge, electricity > [noun] > process of charging > producer replenisher1867 exciter1885 electrifier1906 1867 W. Thomson in Brit. Patent 2147 (1868) 8 The inductor..should be kept electrified to a high and constant potential. This is effected by an adjunct called the replenisher. The replenisher is similar..to the inductor, but two contact springs are added. 1881 W. Thomson in Nature 8 Sept. 435/1 My ‘replenisher’ for multiplying and maintaining charges in Leyden jars for heterostatic electrometers. 1933 Science 14 July 22/2 The Belli doubler..was devised in 1831 and operated on the same principle as a later device designed by Lord Kelvin and better known as the Kelvin Replenisher. 1997 G. W. A. Dummer Electronic Inventions & Discov. i. 1 The Kelvin replenisher was developed as a rotary device to build up the charges. < as lemmas |
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