The Measurement of Magnetic Hysteresis . Fig. 20. through the origin represents 2BA/47r^^, the demagnetising force corresponding touniform magnetisation, H in these experiments being negligible in comparison with the areas of the curves we found J Hc^B = 89200, I lidB ^ 949, J MH ^1-57. ON THE MEASUREMENT OF MAGNETIC HYSTERESIS. 103 § 79. The second specimen was a single iron wire 47 centims. in length, and00412 sq. centim. in section. The magnetising solenoid was that described in § 75,and thus the applied magnetic force was practically iniiform over the whole lengthof the wire. We exa
The Measurement of Magnetic Hysteresis . Fig. 20. through the origin represents 2BA/47r^^, the demagnetising force corresponding touniform magnetisation, H in these experiments being negligible in comparison with the areas of the curves we found J Hc^B = 89200, I lidB ^ 949, J MH ^1-57. ON THE MEASUREMENT OF MAGNETIC HYSTERESIS. 103 § 79. The second specimen was a single iron wire 47 centims. in length, and00412 sq. centim. in section. The magnetising solenoid was that described in § 75,and thus the applied magnetic force was practically iniiform over the whole lengthof the wire. We examined the polarity of the eastern end of the wire at everystage by means of a small compass. We show the results of the experiment infigs. 21, 22, and also in the following table, where the last column indicates the. 4D0O -2000 6000 8000 10000 Fig. 21.
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