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A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments." (1891)

Hall, Edwin Herbert, 1855-1938, Bergen, Joseph Y. (Joseph Young), 1851-1917 · New York, H. Holt and Company · leaf 536

An illustration from A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments.", 1891, leaf 536 — es of metal m and m,which are fastened to the upright axis a, but are insulatedfrom it, that is, separated from it by some non-conductorof electricity. The arch at the top of the figure is of brass,and supports two binding-posts, p and pf, which are in- ELEC TROMAGNE T1SM. 511 sulated from it. From… … Fig. 280. rent used with this apparatus may be supplied by one ormore Daniel cells. At the centre of a coil the line of the magnetic force dueto a current in the coil itself is (see Exercise 53) at rightangles with the plane of the windings, and so directed that, 512 PHYSICS. to an observer looking…

Physics

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