stant battery, so as to convey to those who used in telegraph batteries. A cylinder of the temporary induction of a piece of soft iron zinc and a thin plate of copper or platina, se- end of a copper wire is attached to the end were not acquainted with it a clear idea of the with magnetism, by the… … show how this is done in as few words as pos- per wire to the zinc cylinder. A wire is York, and the electro magnet, D, actuates the round with fine copper wire, covered with silk. sible. At the right hand of the figure there not required to run round all the circuit—any This coil of wire is called…
Patents · Pins · Wire · Claim · Plate · Lever · Scientific American · Magnet · Fly lever · Small table · Patent office · Letters patent · Steam engine · Great variety · Zinc ore · Great number · Partially represented
Internet Archive · Public domain (published before 1931). Free to use for anything.
