stant difference from one tors and equivalents are given, both foot and pound means, not only may the character and quality of the to the other th rough two or more paths the magnetic po- as well as metric references being provided for. metal be ascertained in terms of any desired standard, The… … . ance for all para and dia were less to be dreaded Fig. l.-EDlSON'S MAGNETIC BRIDGE. magnetic bodies, but the than those from direct cur- variation of this conduc- rent machines. They tend tivity under the action of various physical agencies, to throw the person shocked away from them, and the…
Patents · Patented · Magnetic · Scientific American · Apparatus · Storage battery · Post office · Electric light · Brush turkey · Specific gravity · Address munn · Express money · Friction wheel · Perspective view
Internet Archive · Public domain (published before 1931). Free to use for anything.
