A type of non-ionizing radiation in which energy is transmitted through solid, liquid, or gas as compression waves. Sound (acoustic or sonic) radiation with frequencies above the audible range is classified as ultrasonic. Sound radiation below the audible range is classified as infrasonic --consider also terms at PHON-
Waves -- Study and teaching (Primary) : Influence of waves, grade 1 : STEM road map for elementary school / edited by Carla C. Johnson, Janet B. Walton, and Erin Peters-Burton
Wavre, Battle of, 1815 : History of the war in France and Belgium, in 1815 : Containing minute details of the battles of Quatre-Bras, Ligny, Wavre, and Waterloo. By Captain W. Siborne
Wax-modeling -- History. : Ephemeral bodies : wax sculpture and the human figure / edited by Roberta Panzanelli ; with a translation of Julius von Schlosser's "History of portraiture in wax"