About: http://webisa.webdatacommons.org/234142462

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, establishing the phase difference of the wave fronts in the sample is a problem yet to be solved.
http://www.w3.org/ns/prov#wasQuotedFrom	osapublishing.org