a periodic motion of a conductor, or bundle, predominantly in a vertical plane of low frequency of the order of a fraction of one Hz and high amplitude, whose maximum value can be of the same order as the original sag Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=466-01-19
a periodic motion of a conductor, or bundle, predominantly in a vertical plane of low frequency of the order of a fraction of one Hz and high amplitude, whose maximum value can be of the same order as the original sag