The Theory Behind f.lux RELATED: The lighting of the world around us changes depending on the time of day. During the day, we’re exposed to bright sunlight that has a cool, blue color temperature. This helps keeps us awake and affects our circadian rhythms. ![]() That tiny blue light irritates your eyes and besides that, it’s not good for your health. This happens because there is a difference in lightning during the day than at night. 3d games for ppc mac. If you don’t want to be blinded by your computer or mobile screen, there’s a free tool named “f.lux”, available for Windows, Mac and Linux, that reduces eye strain. At night, the bright sunlight is gone — instead, we’re using indoor lighting that is generally dimmer and warmer. Our brains secrete melatonin during these darker hours when we’re not exposed to sunlight, causing us to get sleepier. How do i change the default return address in word for mac. But our computers didn’t get the message. The theory is that staring at these bright, sun-like screens — late into the night or morning, as many of us do — and inhibits melatonin production. Yes, some computers have brightness sensors and will adjust the screen brightness depending on how bright it is around you, but the color temperature doesn’t change. F.lux will use warmer colors at night than during the day, making white colors appear a bit more reddish. The theory is that looking at a warmer display at night will help reduce eye strain, and — because you’re not staring at a bright, sunlight-like screen — cause your brain to secrete more melatonin and help you get to sleep earlier and sleep better. Just look at the blue glow you see coming from a screen at night, and then compare it to the warmer, redder glow coming from a typical light bulb. F.lux aims to make that blue glow more of a reddish glow. Here’s a good, which is used to quantify color temperature. Does It Actually Work? We just covered the promise of f.lux, anyway. Some people just use f.lux because it makes their screens easier on the eyes, some use it because they think it helps them sleep better, and some use it for both reasons. But, obviously, we can’t just trust these claims without looking at the science behind them. Unfortunately, there have been no scientific studies of f.lux itself. However, a variety of studies have found that being exposed to bright blue light can affect your sleep schedule. Subjectively, many of us have realized that staying on the computer staring at a bright screen late at night keeps us awake, while stepping away from that screen helps make us more tired. ![]() While we can’t say f.lux’s claims have been scientifically proven, we can certainly say they seem plausible. How to Get Started With f.lux f.lux is free to download and use, so you can try it out for yourself if you’re curious. • Windows, Mac, and Linux: Grab f.lux from and install it.
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