About: http://webisa.webdatacommons.org/81675742

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 an embodiment, the light source is a light-emitting diode and the sensor element is a photodiode, allowing particularly simple and cost-effective monitoring of the reflected radiation.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com