. Electronic apparatus for biological research . Figure In the case of end-zero meters, the law may be obtained by shaping the permanent magnetic pole pieces as shown in Figure With the coil in the position shown the permanent-magnet field encountered is strong, but weakens as the coil turns clockwise. This gives a scale which is expanded on the left and cramped at the right. Centre-zero movements for null- detection may be made sensitive in the region of the null-point by using pole pieces as shown in Figure , or by using conventional pole pieces and an elliptical central armat
. Electronic apparatus for biological research . Figure In the case of end-zero meters, the law may be obtained by shaping the permanent magnetic pole pieces as shown in Figure With the coil in the position shown the permanent-magnet field encountered is strong, but weakens as the coil turns clockwise. This gives a scale which is expanded on the left and cramped at the right. Centre-zero movements for null- detection may be made sensitive in the region of the null-point by using pole pieces as shown in Figure , or by using conventional pole pieces and an elliptical central armature {Figure ).
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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity
