About: http://webisa.webdatacommons.org/287901415

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	The spectrum may be obtained by a frequency sweep from a synthesizer or by a pulse, and processed by such methods as synchronous demodulation or Fast Fourier Transform, or any other similar method.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca