More of Nighttime Light

We may need to reevaluate how we manage light at night in our homes.  Blume and teammates found that “Ambient light however does not only allow us to see, it also influences our sleep-wake rhythm. . . . .  If light consists solely of short wavelengths of 440 to 490 nanometres, we perceive it as blue. If short-wavelength light activates the ganglion cells, they signal to the internal clock that it is daytime. The decisive factor here is how intense…

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