Heaviside, Oliver, 1850-1925 · London : Macmillan · leaf 219
e, cIq, a, and a-^ being thus consecutive, we must have,h being any constant, = , .-. k = 20 log -^ = 2C log p. MAGNETIC FORCE AND ELECTRIC CURRENT. 197 (.1? - al _rid Also -A- = _L_ f ^^dr, : k = C Therefore d — 2a^ log p. In the figure the common difference d is chosen = 1 and the radiusa = 2, so… … Let us now examine a general property of this system of magneticforce. If we place a unit magnetic pole at any point in the externalfield, and suppose that it can move freely under the influence of themagnetic force of the current, and that no other forces act upon it, thepole will evidently…
Electricity
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