Finally someone mentions this. Wikipedia has all the imformation on this: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Intrinsically_photosensitive_retinal_ganglion_cells" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Intrinsically_photosensitive_r...</a><p>It&#x27;s because we have special photosensitive cells in the sides of our eyes that only see blue light. They&#x27;re not part of the vision, they only regulate the circadian rhythm. So all this talk of white light is uninformed. You only need blue light.