About: http://webisa.webdatacommons.org/251325482

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	Although it is true that there is no such thing as a perfect blackbody, matter does tend to emit radiation in an attempt to cool like a blackbody, emissivity describes how close to perfect an object is in respect to cooling by radiation.
http://www.w3.org/ns/prov#wasQuotedFrom	judithcurry.com