“We show the common view that blue light has the strongest effect on the clock is misguided; in fact, the blue colors that are associated with twilight have a weaker effect than white or yellow ...

“I would expect the effect (regarding yellow light and fog/rain/snow) to diminish as the overall light level gets higher – see Figures 6 and 7 of the “sae01a.pdf” paper I sent ove ...

However, this is not because the sun is shining only yellow light at us. The reason sunsets ... time the sunlight reaches our eyes. The same effect also causes red moons. Outside of the scattering ...