About: http://webisa.webdatacommons.org/122660337

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	as it passes from one transparent medium to another, such as from air to
http://www.w3.org/ns/prov#wasQuotedFrom	opticsplanet.com