About: http://webisa.webdatacommons.org/181946407

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	However, if the reflective surface is flat, such as a wall or floor, the beam maintains its directivity perfectly, reflecting like a laser from a mirror, maintaining good acoustic isolation.
http://www.w3.org/ns/prov#wasQuotedFrom	holosonics.com