About: http://webisa.webdatacommons.org/170917151

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	The mechanical parameters of the system, principally the mass of the moving portions, and the driving electromagnetic force determine this repetition rate.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au