Elementary treatise on electricity and magnetism : founded on Joubert's "Traité élémentaire d'électricité" (1909)
Foster, G. Carey (George Carey), Porter, Alfred William, 1863-1939, Joubert, Jules François · London : Longmans · leaf 387
^ + il which becomes 47rw(7 if we may neglect d^ in comparison with \P.The last expression gives approximately the strength of the fieldinside a coil, whose length is great as compared with its diameter,at any point except near the ends. The direction of the field is always through the coil from… … Fig. 221b. Coil of Several Layers.—Let the figure (Fig. 221b) represent asection, by a plane through the axis, of a coil formed by manylayers of wire uniformly wound one upon another. We willdetermine the field at the point o distant x from the near endof the coil, the length of the coil being I.…
Electricity · Magnetism
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
