Inside Out Library · Explore
Scientific American, Vol. 97, No. 12 (1907) (1907)
leaf 9
r cross-section thus it will be observed that the turn-down electric the lamp, may be transferred from one lamp to an- than the main filament, so that the amount of current lamp of to-day is an evolved product, rather than a other. All that is necessary is to detach the base necessary to bring the… … to secure a wider range of adjustment in the light- about 500 miles, © 1907 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
More pictures from Scientific American, Vol. 97, No. 12 (1907)
More like this
