An elementary manual of radiotelegraphy and radiotelephony for students and operators (1916)
Fleming, J. A. (John Ambrose), Sir, 1849-1945 · London, Longmans, Green & co. · leaf 149
is laid on a disc of card, the cardbeing suspended so as to be free to rotate in a plane perpendicularto the current, but the magnet not free to move on the card, therewill be no rotation of the latter (see Fig. 2). When this experiment is carefully considered, it will be foundto prove that the… … it is proportional to twici ilio current aii<l inversely us the liisttiuei. If, then, wo consider a single circulur lino of magnetic Ihix of nulius r, its length is 27r7, and the magnetic force uU along 20it has a value —, where Cr is the current in the wire. 20The product 27rr x — = 47rO is…
Radio · Telegraph, Wireless · Telephone, Wireless
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
