Inside Out Library · Explore
Scientific American, Vol. 34, No. 13 (1876) (1876)
leaf 4
Philadelphia Mint and to the amplification of parts. It was then remembered that the United States Coast Survey, used a stationary horizontal kind yet invented. Conceive, as was shown by the lecturer, the magnetic field of an electro-magnet was much more pow- that a bar of soft iron, surrounded by… … ring is revolved, several of these conductors touch revolved his coils between them. This was the © 1876 SCIENTIFIC AMERICAN, INC.Internet Archive · Public domain (published before 1931). Free to use for anything.
More pictures from Scientific American, Vol. 34, No. 13 (1876)
More like this
