Duff, A. Wilmer (Alexander Wilmer), b. 1864, ed, Guthe, Karl Eugen, 1866-1915, Hallock, William, 1857-1913, Lewis, E. Percival (Exum Percival), 1863-1925, Goodspeed, Arthur W. (Arthur Willis), b. 1860, Carman, Albert Pruden, b. 1861, McClung, Robert Kenning, 1874- · Philadelphia, P. Blakiston's Son & Co · leaf 506
iron, causing therein a much stronger field thanwas present before. Consider a very long bar of iron placed in a uniform magnetic field.Poles are developed at its ends and these also produce a magnetic fieldbut, if the bar is long enough, their effect near the middle of the bar may MAGNETIC… … On one side of the cut a posi- w Fig. 352. Suppose the intensity of the field, assumed uniform before the presenceof the iron, was H, and that through the iron the flux density has been in-creased to a value B, then B = ,01//, in which B is called the magnetic in-duction, and fi the permeability.…
Physics
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