About: http://webisa.webdatacommons.org/206703901

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	By the 19th century, physicists saw a clear demarcation: Matter is made of discrete atoms, while light is a continuous wave of electromagnetic energy.
http://www.w3.org/ns/prov#wasQuotedFrom	thegreatcourses.com