About: http://webisa.webdatacommons.org/5927871

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	In brief, values of physical observables such as energy and momentum were no longer considered as values of functions on phase space, but as eigenvalues of linear operators.
http://www.w3.org/ns/prov#wasQuotedFrom	wikiversity.org