ntioned. The electrode of theinduction-plate may be connected with that of the quadrantbeneath it, or with the case, or it may be insulated, withoutsensibly affecting the indications of the instrument. Forthe second grade of sensibility the induction-plate is con-nected with the case, and the… … XX.] On Electrometers and Electrostatic Measicrements. 279 tHey commonly receive by the act of raising their electrode,a clisinsulator is provided, consisting of a light arm or springwhich may he turned so as to make contact with the quad-rant by means of a small milled head projecting above…
Electricity · Magnetism
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