A course of experiments in physical measurement (1897)
Whiting, Harold, d. 1895 · Boston, D.C. Heath and Co. · leaf 1206
X is -i- I; hence we have i ——. = w XgXis-^i, or 2wgs PROOFS. 1171 whence, , — i/ ^wgra (w) Absolute Electrometer. Let P be a poiut chargedwith a unit of positive electricity, and AB an elec-trified plane near Pcharged with « units ofelectricity per unit ofsurface. Draw thehemisphere A Q Q B,with… … q cos QPQi Q {PQT Assuming that the hemisphere is also charged with s unitsof electricity per unit of area, the attractions of q and Qresolved in the direction PQ become .X2^^,and.x ^ {PqY {PQY respectively. We have seen that these two quantities intowhich « is multiplied are equal. Since any two…
Physics
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