About: http://webisa.webdatacommons.org/392916268

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 substituting a light source, such as a light emitting diode, for the detector, the same mechanism can also be used to selectively introduce electrical signals into the light transmission path.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com