About: http://webisa.webdatacommons.org/181727391

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	It should be noted that this will be the case in particular for a beam passing through the liquid at an angle, in which case the angle of refraction of entrance will change.
http://www.w3.org/ns/prov#wasQuotedFrom	freshpatents.com