Letter | Published:

Variation in the Longitudinal Incremental Permeability due to a Superimposed Circular Field

Nature volume 142, page 795 (29 October 1938) | Download Citation



DURING the course of an investigation of the variation of the longitudinal incremental permeability by a superimposed circular magnetic field, some rather interesting results Were obtained with certain iron-nickel alloys. The ferromagnetic materials under investigation were of wire form and served as the core of a long slender solenoid. Direct current was passed through the core to produce the circular field, and the longitudinal permeability was calculated from inductance measurements on the solenoid.

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  1. Institute of Technology University of Minnesota, Minneapolis, Minnesota. Aug. 31.

    • J. S. WEBB


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