The elements of dynamic electricity and magnetism (1903)
Atkinson, Philip. [from old catalog] · New York, D. Van Nostrand company · leaf 356
I … 34<^ DYNAMIC ELECTRICITY AND MAGNETISM. tery from the earth. This current flows to the negativepole of B from right to left through H^ coil ^, and pole-changer A\ and hence reverses the polarity of relay R,attracting M from pole of a to pole of b\ while that tothe negative pole of B flows as…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
