Discussion on “corona losses between wires at high voltages” (Harding), “the law of corona and dielectric strength of air — II” (Peek), and “the electric strength of air — III” (Whitehead), Boston, M

John B. Taylor: Toward the end of Mr. Peek´s paper he speaks of the mechanical vibration of wires. The photographs reproduced in his paper, Fig. 41 and 42, I think are easily enough explained, that is, the wire is pulled first on one side, and then on the other, by electrostatic forces, and if the wire is approximately attuned to the frequency, closely enough so that it can be made to vibrate with that frequency, you have this characteristic of negative on one side and positive on the other. Mr. Peek speaks of the vibration noticed on a pair of 20-mil. steel conductors, 500 ft. (152 m.) long, strung at 10-ft. (3-m.) spacing, which I think must have been due to something of that condition.