About: http://webisa.webdatacommons.org/397472832

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	The idea of the ether seemed necessary because, if light was a wave, it seemed obvious that it had to be a wave travelling in some medium.
http://www.w3.org/ns/prov#wasQuotedFrom	vigyanprasar.gov.in