Dr. Blume commented, “We found no evidence that the variation of light color along a blue-yellow dimension, encoded by the cones, plays a relevant role in the human internal clock or sleep.
Some cones are more sensitive to red, some to green, and some to blue. The signals from these receptors are integrated in your brain to produce your sense of color. Blue light has the shortest ...
The Tijn Blue Light Blocking Glasses are affordable, and there are over a dozen color options, so you can match these glasses to your outfit. Sarah Kobos/NYT Wirecutter Their lenses are a little ...