. Contributions. nt demagnetization and a new con-dition of stability. Then anotherphotograph was taken. The method ofdetermining the residual flux after eachphotograph was taken has been removal of the plug before eachobservation introduced a demagnetizingfield due to the ends and caused a markeddecrease of the residual magnetism whenthe flux was at its high values. Thiseffect decreases as lower values of theremanence are reached and vanisheswhen the flux becomes zero. Thesecurves were plotted with magnetic fluxas ordinates rather than the flux density or induction while the fig
. Contributions. nt demagnetization and a new con-dition of stability. Then anotherphotograph was taken. The method ofdetermining the residual flux after eachphotograph was taken has been removal of the plug before eachobservation introduced a demagnetizingfield due to the ends and caused a markeddecrease of the residual magnetism whenthe flux was at its high values. Thiseffect decreases as lower values of theremanence are reached and vanisheswhen the flux becomes zero. Thesecurves were plotted with magnetic fluxas ordinates rather than the flux density or induction while the figuresquoted above are values of flux density. The area of the specimen sq. cm. hence to obtain variation of induction from the curves theordinates should be divided by Figs. 2 and 3 are two of the series obtained from this specimen. Thecurves were all transferred to a single sheet (see Fig. 4) and properlyplaced with reference to the axes according to the residual flux deter-mined after each was Vol. s. STABILITY OF RESIDUAL for Demag. and Recovery Curves of Specimen A. 368 Current. No. of Secondary Turns. Def. on Removing Plug. Def. Due to Remaining Flux. RemanentFlux. Maximum J/. GauiB perDivision. .094 125 207 .0438 .48 75 198 .1206 .576 50 196 .1842 .72 50 183 6,606 .2112 .80 50 173 6,247 .2346 .92 50 159 5,757 .234 25 146 .3824 25 122 4,436 .3844 25 99 .3776 25 88 .4561 25 63 2,283 .524 25 49 .5185 25 32 1,158 .5278 25 IT .fillOO Data for Demagnetization and Recoiery Curves Derived from the Current Curve and the FluxVariation Curve. // = field intensity. 0 = magnetic H H H H « .24 .75 70 107 95 .48 168 233 238 .85 308 399 368 5.
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Keywords: ., bookcentury1900, bookdecade1910, bookidcon, bookyear1915, williams
