Hai cercato la traduzione di undulation da Francese a Inglese

undulation of the body
traction du bras push-off

ainsi, en 1860, james clerk maxwell écrivit plusieurs longs articles, avec comme point culminant un article sur la démonstration de la nature électromagnétique des ondes lumineuses, dans lequel il écrivit que : « "we can scarcely avoid the inference that light consists in transverse undulations of the same medium which is the cause of electric and magnetic phenomena".
==19th century==early in the nineteenth century, classic papers by humphry davy, michael faraday and james prescott joule appeared in the journal and in the 1860s james clerk maxwell contributed several long articles, culminating in a paper containing the deduction that light is an electromagnetic wave or, as he put it himself, "we can scarcely avoid the inference that light consists in transverse undulations of the same medium which is the cause of electric and magnetic phenomena".