About: http://webisa.webdatacommons.org/219724192

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	Assume a harmonic time dependence (exp(-i \omega t)) and a spatial part of the solution that looks like exp(i k r) where r = n a, where n is an integer.
http://www.w3.org/ns/prov#wasQuotedFrom	blogspot.com