About: http://webisa.webdatacommons.org/384247954

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 experiments are a significant step toward next-generation atomic clocks" based on optical rather than microwave frequencies.
http://www.w3.org/ns/prov#wasQuotedFrom	nist.gov