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)
Fig. 43. … 334 MAGNETISM. In both cases the magnetized bodies in contact with the magnetliave their poles reversed; or, generally, the adjacent extremities of allthe bodies (including the magnet) have opposite polarity, as indicatedby the letters. If one of these magnetized bodies be reversed, or turned end…
Physics · Astronomy
Internet Archive · University of Connecticut Library · Public Domain Mark 1.0. Free to use for anything.
