Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 89
this twist in the suspension is proportional to the angleof twist itself, provided that the coil isalways in a magnetic field of the samestrength. To ensure this the soft ironcylinder E is situated between the polefaces, and serves the double purpose ofmaking (by the presence of the poles uponit)… … I
Electricity · Magnetism
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
