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 44
Fig. 24. Fia. 24a. … Fia. 24b. It continues to overshoot the mark, so to speak, until friction, internaland external, brings it to rest. Though the electric charges on condenser coatings appear to be inde-pendent of gravity, they do possess inertia, as is shown by their resist-ance to change of direction and by their…