Ako imate problema sa spavanjem postoji dobra sansa da ce vam ovo pomoci. Ever notice how people texting at night have that eerie blue glow? During the day, computer screens look good—theyre designed to look like the sun. But, at 9PM, 10PM, or 3AM, you probably shouldnt be looking at the sun. f.lux makes your computer screen look like the room youre in, all the time. When the sun sets, it makes your computer look like your indoor lights. In the morning, it makes things look like sunlight again. en.wikipedia.org/wiki/Melatonin It is principally blue light, around 460 to 480 nm, that suppresses melatonin,[24] proportional to the light intensity and length of exposure. Until recent history, humans in temperate climates were exposed to few hours of (blue) daylight in the winter; their fires gave predominantly yellow light. The incandescent light bulb widely used in the twentieth century produced relatively little blue light.[25] Wearing glasses that block blue light in the hours before bedtime may decrease melatonin loss. Kayumov et al. showed that light containing only wavelengths greater than 530 nm does not suppress melatonin in bright-light conditions.[26] Use of blue-blocking goggles the last hours before bedtime has also been advised for people who need to adjust to an earlier bedtime, as melatonin promotes sleepiness.
Posted on: Tue, 06 Jan 2015 17:04:34 +0000
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