About: http://webisa.webdatacommons.org/406971285

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	When the casing is rotated, the mercury or other liquid is picked up by the inner periphery of the casing and the outer periphery of the blocks and the free ends of the blocks are thrown outwardly by centripetal force.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com