MUCH of the present knowledge concerning the capillary electrometer is due to the author of this little book. The instrument was invented in 1875 by Prof. Lippmann, but for twenty years it was hardly ...
THE electro-capillary machine of Lippmann and his capillary electrometer, besides the capillary electroscope of Werner Sieinens and the electro-chemical relay of Wheatstone are all illustrations of a ...
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