About: http://webisa.webdatacommons.org/417154331

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	A spectrograph is an instrument that separates light into a frequency spectrum and records the signal using a camera.[1] There are several kinds of machines referred to as spectrographs, depending on the precise nature of the waves.
http://www.w3.org/ns/prov#wasQuotedFrom	wikipedia.org