Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 430
wherever in front ofthis circle I may hold the north pole of the compass needle it willalways tend to go through the circle in that direction if the current isgoing in the direction of the arrows. Here, we have a method of Dec, 1884.] Dynamo-Electric Machinery. 407 intensifying what was shown by… … Fig. 3.—A current passing in directionof liglit arrows moves a north pole indirection of dark arrows. I will show you next another experiment to illustrate the analogybetween the electric current and magnetism, which follows directlyfrom Oersteds experiments. Here I have a mass of iron or sets…
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