Inside Out Library · Explore
Scientific American, Vol. 39, No. 10 (1878) (1878)
leaf 0
tion was con- a rigid upright attached to one end of the base of the in- stantly increased under the electrized gratings, whether the produced by increased pressure on the spring. The length of the iron core of the electro-magnet had therefore been electricity was positive or negative, evaporation… … © 1878 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
More pictures from Scientific American, Vol. 39, No. 10 (1878)
More like this
