A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 805
Fig. 720.—Lines of force by means of iron filings. Strength of magnetic field, or magnetic intensity.—Having seenthat the magnetic field has a definite direction at every point, its … PlG. 721. Lines of force by means of Iron filings. strengl h must now be considered. It is fairly obvious from Figs. 716-721 that the field is stronger where the lines of force are packedclosely together than where they are far apart. In order, however,to define exactly the strength of field at any…
Physics
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