Ever notice how your little gadgets that glow blue can wake you up in the middle of the night, like that incessant blinking on your cell phone? No, it’s not just your imagination: blue wavelengths of visible light apparently keep our brains alert for longer.

Makes sense, right? If Beta waves are the highest frequency and they only occur when our brains are at maximum alertness, then the wavelengths of light that are the highest in the visible spectrum would perhaps be more likely to keep us awake.

This also explains why, when I switched from (warm-colored, i.e., yellowish) 60W incandescents to two compact (cool-colored, i.e., bluish) fluorescents totaling the lumens-output of almost 200W together in the den of my apartment, I was suddenly able to stay up studying, talking, and blogging until all hours!

[1] read more | [2] digg story

Ever notice how your little gadgets that glow blue can wake you up in the middle of the night, like that incessant blinking on your cell phone? No, it’s not just your imagination: blue wavelengths of visible light apparently keep our brains alert for longer.

Makes sense, right? If Beta waves are the highest frequency and they only occur when our brains are at maximum alertness, then the wavelengths of light that are the highest in the visible spectrum would perhaps be more likely to keep us awake.

This also explains why, when I switched from (warm-colored, i.e., yellowish) 60W incandescents to two compact (cool-colored, i.e., bluish) fluorescents totaling the lumens-output of almost 200W together in the den of my apartment, I was suddenly able to stay up studying, talking, and blogging until all hours!

[3] read more | [4] digg story