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Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)

Johnson, Frank G., 1835- · Chicago, A.H. Andrews · leaf 347

An illustration from Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families, 1878, leaf 347
:340 MAGNETISM. 630. Figure 65.—Magnetic curves with two magnetsand similar poles.—Reverse the position of one of the magnets inthe last experiment, so as to oppose two similar poles, NN, and the P ^^ lines of force will then appear to be conflicting lines. Therepulsive forces will cause…

Physics · Astronomy

Internet Archive · University of Connecticut Library · Public Domain Mark 1.0. Free to use for anything.

More pictures from Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families

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