Robison's Manual of radio telegraphy and telephony for the use of naval electricians (1918)
Robison, S. S. (Samuel Shelburne), b. 1867, United States Naval Institute, Todd, David Wooster, Hooper, Stanford Caldwell · Annapolis, Md. : The United States Naval Institute · leaf 34
tical movement is the sine of the angle, and therefore the inducedcurrent is proportional to the sine of the angle; also and for the same reasonthe induced E M F which produces the current is proportional to the sine ofthe angle of revolution. MANUAL OF RADIO TELEGRAPHY AND TELEPHONY. 29 35. If C… … currents induced in C D also flow through E F and make of it a sole-noid whose strength varies with the strength of the current and whosepolarity reverses with the reversal of the current. If a small magneticneedle were pivoted in E F, its direction would tend to change with eachreversal of the…
