PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Other notable contributions to electromagnetic wave theory include the work of Lorentz, Ludwig Boltzmann, and Hermann Helmholtz who developed Maxwell???s Equations to describe the propagation of light including reflection and refraction at surfaces.
http://www.w3.org/ns/prov#wasQuotedFrom
  • ethw.org