Night light Review (Windows)
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Night light is the Microsoft blue light reduction feature. It comes built-in into Windows 10 Creators update. It was also available in the Windows 10 Insider preview before also. Night light is not available for Windows 7. If you want…
How Iris reduces PWM flicker?
Short explanation
Modern monitors use PWM to control the brightness of the screen. This is not problem at maximum brightness, but at low brightness it causes eye pain. Iris is fixing this by controlling the brightness with the video card and by…
How Iris reduces PWM flicker?
Medium size explanation
How modern monitors work? All monitor have some kind of flicker rate. This is normal, because the way semiconductors work requires them to turn ON and OFF in order to work properly. Every modern display uses some kind of LED,…
XYZ
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Color mapping experiments: what the average human sees In the late 1920s William David Wright and John Guild independently conducted a series of color matching experiments that mapped out all the colors the average human (meaning the average of the…
Color
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On the one hand, light comes from the sun or other radiant sources, and is refracted by mediums (water, the atmosphere, glass) and diffusely or specularly reflected by surfaces. On the other hand, color isn't out there in the world…
Circadian system Phase and Amplitude
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Phase Most people think of the circadian system ONLY in terms of phase - e.g., we would call a night owl "phase delayed" and an early bird "phase advanced". This means that their internal clock is offset from the solar…
F.lux 4 beta Review (Windows)
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The popular software for blue light reduction f.lux alternative to Iris has new major version with lots of new features and improvements. The new version is v4 and it's a major improvement over the several year old version v3. The…
Macular Pigment
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Macular pigment is comprised of Zeaxanthin and Lutein, which are found in the center of the macula (fovea) at a natural 2:1 ratio. MPOD (Macular Pigment Optical Density) is important for three specific reasons: 1. Low macular pigment is…
F.lux 3 Review (Windows)
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I'm still in the process of writing this article :)
Bigger, Brighter, Bluer-Better? Current light-emitting devices β adverse sleep properties and preventative strategies
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1Department of Childrenβs Sleep Medicine, Evelina London Childrenβs Sleep Medicine and Kingβs College London, St Thomasβ Hospital, London, UK 2Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK Objective: In an effort to enhance the efficiency, brightness, and…
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