About: http://webisa.webdatacommons.org/169542846

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	We can hear these frequencies but we can not normally see them.However, here is an experiment that illustrates what is actually happening at the drumhead.
http://www.w3.org/ns/prov#wasQuotedFrom	science20.com