The Measurement of Magnetic Hysteresis . r a coil wound about the centre of the rod. The rod and the secondary coils were placedinside a long magnetising solenoid. By comparing the changes of induction through these twosecondaries due to a reversal of the primary current, he found the distance X between the centres ofgravity of the free magnetism on the two halves of the rod. He found that the centres of gravitj^ move towards the centre as Bq increases, until Bq reaches Bq. A further increase of Bq caused the centres of gravity to move out again from the centre. Dr. HoLBORN made similar experi
The Measurement of Magnetic Hysteresis . r a coil wound about the centre of the rod. The rod and the secondary coils were placedinside a long magnetising solenoid. By comparing the changes of induction through these twosecondaries due to a reversal of the primary current, he found the distance X between the centres ofgravity of the free magnetism on the two halves of the rod. He found that the centres of gravitj^ move towards the centre as Bq increases, until Bq reaches Bq. A further increase of Bq caused the centres of gravity to move out again from the centre. Dr. HoLBORN made similar experiments onellipsoids, and found that for them X was remarkably constant. 102 MESSRS. G. F. G. SEAELE AND T. G, BEDFORD 47 centims., and thus since the internal radius of the windings was about 2 appKed magnetic force was far from uniform near the ends of the wires. Theresults of this experiment are shown in figs. 19, 20. As we pointed out in § 18,h exhibits hysteresis with respect to both B and H. In fig. 19 the straight line. 4000 8000 toooo Fig. 19,
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