Determination of the degree of uniformity of bars for magnetic standards . Fig. 9.—Normal induction curves taken -with the permeameter test coils over the regionsA and B as indicated on the uniformity curve, showing the effect of the magnetically softspot near region A Numerical data for the 12 wrought-iron bars of Fig. 7 (Table 1)show that not one of these bars comes within this limit. The bestone shows a maximum deviation of 16 per cent and may be usedwhere an accuracy better than 2 per cent is not necessary. Thenext best bar has a maximum deviation of 38 per cent and is usedas an auxiliary.
Determination of the degree of uniformity of bars for magnetic standards . Fig. 9.—Normal induction curves taken -with the permeameter test coils over the regionsA and B as indicated on the uniformity curve, showing the effect of the magnetically softspot near region A Numerical data for the 12 wrought-iron bars of Fig. 7 (Table 1)show that not one of these bars comes within this limit. The bestone shows a maximum deviation of 16 per cent and may be usedwhere an accuracy better than 2 per cent is not necessary. Thenext best bar has a maximum deviation of 38 per cent and is usedas an auxiliary. If two bars have equal maximum deviations, theone whose deviations have the smaller arithmetic sum is thebetter. Sanford] Magnetic Uniformity ii 15000. » o • o- -e o Ql o - ° o • -* ° ° <*5 receive**
Size: 2161px × 1157px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookiddete, booksubjectmagnetism
