About: http://webisa.webdatacommons.org/347404110

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	Grooves 80 have a free-space depth, D, equal to an integral multiple of an optical half-wavelength, n ??/2, wherein ?? is the wavelength of the light which falls on the photodetector and n is a positive integer.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com