Assertion: body radiation | /r/HasProperty | approximated by the radiation
Facets:
value: in the laboratory
type: LOCATION
value: in an entirely opaque body
type: OTHER
Source sentences:
text: In the laboratory, black-body radiation is approximated by the radiation from a small hole in a large cavity, a hohlraum, in an entirely opaque body that is only partly reflective, that is maintained at a constant temperature.