About: http://webisa.webdatacommons.org/314451561

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	In essence, the photoconductive layer 23 includes a material, such as lead oxide, whose electrical conductivity varies in relation to the amount of light contacting it.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk