About: http://webisa.webdatacommons.org/56455838

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	Since light is an electromagnetic wave (this had been known since the nineteenth century), its speed is fixed by the laws of e
http://www.w3.org/ns/prov#wasQuotedFrom	newyorker.com