About: http://webisa.webdatacommons.org/420873224

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	Even this system, however, relies mostly on current-collecting brushes; no known linear actuator has fully utilized the smooth transition in conductance characteristic of Hall-effect elements.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com