Vibration in Telegraph Wires

Abstract

Two winters ago while motoring over a route traversed daily for many years, we observed this phenomenon for the first time. Hence the conditions giving rise to it must be rather exceptional. The vibration was so striking and unusual that we stopped the car to exclude the possibility of adventitious optical effects from that source. The time was about 9.15 a.m.; the air clear and 'frosty'; the sun brilliant; and the wires heavily loaded with ice. There was a barely perceptible breeze blowing across the road.