About: http://webisa.webdatacommons.org/187390537

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	You will need either 4 multimeters, or 4 LEDs or other source of light.
http://www.w3.org/ns/prov#wasQuotedFrom	pcbheaven.com