Blue light apparently delivers the wavelengths needed to regulate our circadian rythmns, according to research described in Science Daily.
Blue sky is a mixture of wavelengths dominated by short wavelength light that gives a blue visual sensation. According to Mark Rea, Ph.D., LRC director, the circadian system is essentially a blue sky detector.
â€œBlue sky is ideal for stimulating the circadian system because itâ€™s the right color and intensity, and itâ€™s â€˜onâ€™ at the correct time for the right durationâ€”the entire day,â€ said Rea.
LRC is the Lighting Research Center at Rensselaer Polytechnic Institute.
They performed a study in which they exposed elderly people to blue light, and found that the subjects slept more between midnight and 6 a.m.
We’re not meant to be indoors all day. No wonder so many of us aren’t getting enough sleep.
I wonder, also, about the effect of wearing sunglasses . . .
[tags] sleep [/tags]