PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • This scattering occurs because the local direction of the normal to the surface is different for the different rays. (The normal is a line perpendicular to the surface at the point where the incident ray reflects.) By contrast, regular reflection is reflection from a smooth surface, such as a mirror.
http://www.w3.org/ns/prov#wasQuotedFrom
  • dummies.com