We are dealing with hemispherical waves of electric and magnetic force, which are sent out from a certain radiating centre, and in order to localise that centre we have to determine the position of the plane of the wave and also the curvature of the surface at the receiving point.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
A communication trench which I visited, when paying an afternoon call at a dug-out, was wide enough to admit a pony and cart, and, as it has to serve to bring up ration-parties and stretcher-bearers as well as reliefs, it is made as wide as is consistent with its main purpose, which is to protect the approach and to localise the effect of shell-fire as much as possible, the latter object being effected by frequent "traversing."
"Leaves from a Field Note-Book"
J. H. Morgan
Others determined to see in the book a literal transcript of fact, set themselves to localise and identify incidents which were pure fiction, introduced for reasons of picturesqueness.
"The Silent Isle"
Arthur Christopher Benson