An experimental study of the Koepsel permeameter (1914)
National Bureau of Standards · leaf 19
ly different cross sections. Burrows] The Koepsel Permeameter 6. LENGTH OF SPECIMEN 115 It seemed quite probable that the length of the specimenmight have some influence on the reading of the instrument.With a view of determining the magnitude of any such influencethe following experiment was made.… … FlG. 10.- -Showing the effect of usuig specimens whose ends project beyond the yokes ofthe Koepsel apparatus ments were taken as before, taking care that the same portion ofthe rod was within the apparatus. This operation was repeateduntil the rod had been reduced to the minimum length that couldbe…
Magnetism · measurements and use of instruments/ B8000 Power systems and applications
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