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 187
edon account of brush discharges, which always start at corners. The effectis the same as if the electricity were traveling too fast to turn corners. The necessity for bringing a number of leads to the combination switchfor sending or receiving detracts considerably from the simplicity of…