Temperature coefficient of magnetic permeability within the working range
Book details
- Title
- Temperature coefficient of magnetic permeability within the working range
- Publication year listed
- 1915
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
Temperature coefficient of magnetic permeability within the working range
Year: 1915
In magnetic measurements made at the Bureau of Standards it has been found that the heating effect of the current, employed to produce fields of 100 to 300 gauss, changes appreciably the value of the induction for a given field. The usual practice, when an accuracy of 1 % is desired, has been to immerse the coil in an oil bath maintained at a constant temperature of 25 degrees . The object of the present investigation is to determine the magnitude of the temperature effect and to see whether it is possible to apply a correction in order to reduce the measurements made at any temperature to some standard temperature. The materials investigated were cast-iron, wr