THE LIGHT DOCTOR 7: Tuning to the Right Wavelength

Chapter 7 asks which blue color wavelengths, and what dosage of them, do we need to sync our circadian clocks? We need to know this to design healthy circadian lights.

Just like adjusting the dial to get your favorite FM or AM radio station, electric lights have to be tuned to the correct circadian blue wavelengths to ensure a clear day-night signal. In the natural outdoor world, where there is such a large contrast between the brightness of daylight and the dimness of moonlight, the circadian signal is extremely stro…