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 432
in motion is ri_2AB 312] MEASUREMENT OF A MAGNETIC FIELD 409 Suppose the case of the earths field and the medium to be air.If the rotation is about a vertical axis, the hoinzontal component,H, alone comes into play. The circuit, at first perpendicular tothe meridian, being turned half round, we… … Fig. 264. This method was used by Weber to determine the magneticdip. The apparatus (Fig.264) employed for this pur-pose is known as WebersInclinometer. 311. Measurement ofa Magnetic Field.—By means of the same method, and using a very small coil movable about an axis in its plane, the intensity of…
Electricity · Magnetism
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