Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 411
pair of pith balls may also be suspended at thecenter of the conductor. Now, by charging the sphericalconductor with positive electricity, and bringing it withina few inches of one end of the cylindrical conductor, thepith balls at the ends of the latter will diverge, while thoseat the center will… … Insulated Sphere. The positive charge of the sphere attracts the negativeelectricity of the cyhnder and repels the positive, thus dis-turbing the equilibrium which existed before the approachof the positively charged sphere. On testing the middleportion of the cylinder by means of an electroscope,…
Physics · Lantern projection · Electric apparatus and appliances
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