About: http://webisa.webdatacommons.org/226982246

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	Diffraction gratings have been known for many years and produce a high resolution spectrum where the wavelength is a function of the diffracted angle.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com