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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	Thus, the following three equations are valid where S is the strength of the field at a particular sensor, D1, D2 and D are the distances referred to above and K is a constant.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com