About: http://webisa.webdatacommons.org/278724474

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 was James Clerk Maxwell, in the 1860's, who first predicted that light was an electromagnetic wave and computed (rather than measured) its speed.
http://www.w3.org/ns/prov#wasQuotedFrom	chemteam.info