Figure 9
From: Correlated color temperature is not a suitable proxy for the biological potency of light
Circadian Stimulus (CS) as a function of CCT for a blackbody radiator. The exact inflection point of the b-y spectral opponency of the CS model for a blackbody radiator occurs between 3442 and 3443 K. Up to 3442 K, “yellow wins” (indicated by circle markers); from 3443 K onwards, “blue wins” (indicated by square markers). The dashed line indicates the transition point of the model and is dashed to indicate that this transition is not continuous (values along this line are not achievable) and that the CS model is a step function.
