A laboratory course in experimental physics (1896)
Loudon, W. J. (William James), McLennan, John Cunningham, joint author · New York and London, Macmillan and Co. · leaf 218
ugh which the auxiliary magnet is deflected. Whenthis magnet is in the meridian, one sees the image of thezero division (Fig. 13) formed on the cross-hair of the telescope,but when the mirror KL is turned through an angle 6, onesees formed there the image of some other division, N. HORIZONTAL… … Fig. 14. pointing east, for example, and the deflection noted, and itshould then be turned with its negative pole in this direction,and the deflection again observed. After this the bar should 204 EXPERIMENTAL PHYSICS. be rotated through 1800 and the same process repeated, themean of the four…
Physics
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