Notes on electricity and magnetism. designed as a companion to Silvanus P. Thompson's Elementary lessons (1891)
Murdock, J. B. (Joseph Ballard), 1851-1931, Thomson, Silvanus Phillips, 1851-1916 · New York, Macmillan & Co. · leaf 47
34 NOTES ON but if r = i, area is solid angle,.-. oo — lit (i — cos 6). To calculate the potential. Let 7-j and r3 be the distances from the point D to the faces ofthe small element ds, fi be the angle between ds and its projection … Fijr. 8. perpendicular to r1 and p be the magnetic density. The strengthof the shell i being the product of the density and thickness, i = fjt .-. p = -.The quantity of magnetism on the small element ds is dm — ds.p = ds.— (i) The potential at D due to ds is /1 I \ dmdV = dmi ) =—- (r, - n) ... (2)…
Electricity · Magnetism
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