Assertion: incandescent lamp | /r/CapableOf | drop to negative values
Facets:
value: for some light sources
type: TRANSITIVE-OBJECT
Source sentences:
text: Numerically, the highest possible CIE R a value is 100 and would only be given to a source identical to standardized daylight or a black body (incandescent lamps are effectively black bodies), dropping to negative values for some light sources.