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 263
s in regularcurves (Fig. 155) eachof which runs from onepoint of the outline ofthe magnet to the sym-metrically situated pointon the other side of thecentre. If the glass orcardboaid is gently tapped, the friction of the particles of iion ismomentarily overcome and their magnetic arrangement is… … Fig. 156. 240 DESCRIPTION OF PHENOMENA [176- fields: Fig. 156 Iepresents the field given by two equal oppositepoles ; Fig. 157 that given by two equal similar poles. The directive action of the earth is found to be sensibly thesame both in direction and intensity for considerable distances:for…
Electricity · Magnetism
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