Tunzelmann, George William von, 1856- · New York, Scribner & Welford · leaf 66
a section of the field of force. If we couldobtain a single separate magnetic pole—which, as a matterof fact, is impossible—the magnetic field surrounding itwould be of a character exactly similar to the field of forcesurrounding a sphere of gravitating matter, as in the case ofthe sun previously… … Fig. 2. represents a section, through the line joining the poles, ofthe field of force due to a pair of opposite poles. The actual form ofthe lines of force inthe space surround-ing the poles of amagnetised bar isshown in Fig. 3. The field of force Fig- 3- surrounding an electric current may be…
Electric industries · Electricity
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