A text-book on chemistry. For the use of schools and colleges (1866)
Draper, Henry, 1837-1882 · New York, Harper & brothers · leaf 154
ELECTROMETEES. 141 Fig. 109. … to be preferred when it is required to have exact meas-ures of that quantity. Coulombs electrometer consists of a glass cylinder,A, Fig. 109, upon the top of whichthere is fixed a tube, B, in the axisof which hangs a glass thread, 5,to the lower end of which a smallbar of shellac, b d, with a gilt…
Chemistry · Physics
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