The book of stars; being a simple explanation of the stars and their uses to boy life, written to conform to the tests of the Boy scouts (1915)
Collins, A. Frederick (Archie Frederick), 1869- · New York, D. Appleton and company · leaf 95
ole as well. By mag-netic we mean that the Earth be-haves like a steel bar that has beenmagnetized.A steel bar magnet like that shown in Fig. 85 is strongestat its ends. One end is positively magnetized, and we call thisend its north pole, and the other end is negatively magnetized,and we call this… … Fig. 85.—Lines of Forcethrough and around aMagnet. MOTHER EARTH, OLD ADAMS PLANET 77 n.M/O-,
Astronomy · Stars
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