Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)
when theyare repelled so as to reach thesides, to prevent the inside ofthe jar from becoming electri-fied by induction ; otherwise the apparatus would be useless. To avoiddampness, the air within is dried by quick lime, and the top of the jarand cork are coated with an insulating varnish, made of… … 360 ELECTRICITY. 67S. Method of using the gold-leaf electrometer (Fig,11).—If the negatively electrized rod, in the hand, bebronght near theknob, T, it will, by induction, attract tlie positive fluid, and repel thenegative to the gold-leaves, and diverge them, as indicated by the signsplus and…
Physics · Astronomy
Internet Archive · University of Connecticut Library · Public Domain Mark 1.0. Free to use for anything.
