About: http://webisa.webdatacommons.org/146837758

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	This method for finding the zero angle is particularly useful, for example, in X-ray reflectometry of semiconductor wafers, which tend to warp, so that the zero angle varies over the surface of the wafer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com