Assertion: lamp's color temperature | /r/HasProperty | meaningful
Facets:
value: in practice
type: OTHER
value: for light sources
type: PURPOSE
Source sentences:
text: In practice, color temperature is meaningful only for light sources that do in fact correspond somewhat closely to the radiation of some black body, i.e., light in a range going from red to orange to yellow to white to blueish white; it does not make sense to speak of the color temperature of, e.g., a green or a purple light.
text: The isotherms are perpendicular to the Planckian locus, and are drawn to indicate the maximum distance from the locus that the CIE considers the correlated color temperature to be meaningful: