Elementary treatise on electricity and magnetism : (1905)
Foster, G. C. (George Carey), 1835-1919, Joubert, J. (Jules François), 1834-1910, Porter, Alfred W. (Alfred William), 1863-1939 · London ; New York ; Bombay : Longmans, Green, and Co. · leaf 284
from an anchor ring, as shown inFig. 167, must likewise have the valueiirA. This result is also arrived at byobserving that a complete anchor-Iinghas zero potential and field eveiy-where, since it consists of closed fila-ments ; cutting a thin gap across itis equivalent to removing a magnetic… … Fig. 167. 191] SPHERICAL SHELL :201 (iv.) Assemblage of a large number of Small Magnets uvith Axesindiscriminately directed. — If dM is the moment of a single magnetic particle, the potential due to it is -—^-^- The angle a may have any possible value, and cos a will therefore be on theaverage as…
Electricity · Magnetism
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