About: http://webisa.webdatacommons.org/27705350

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	It has now been appreciated that when a bullet is fired from a gun such as a rifle, at each instant of time the supersonic bullet generates a shock wave, each shock wave subsequently expanding spherically at a linear rate.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com