Cumming, Linnæus, b. 1843. [from old catalog] · New York, D. Van Nostrand · leaf 144
f a vertical metal rod, from which issuspended, by a thin wire or linen thread, a pith ball (Fig. 83).The divergence is shown by a small graduated quadrantattached, which indicates the degree to which the machine isworking. This is called Henleys Quadrant Electrometer—an unfortunate term, as the… … Fig. 84. by a spindle through its centre. Two rubbers {BE) areattached at opposite extremities of the vertical diameter, eachmade double, and pressed by a screw clamp on opposite 126 Electricity. [Book II. sides of the plate. Along a horizontal diameter are twocombs (CO), each formed in shape of…
Electricity
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