f.lux - Mac, Windows and Linux

f.lux is a small utility program that changes the colour temperature of your monitor to suit the lighting conditions in your room. You will notice less eye-strain when using your monitor at night as the screen is tinted a light orange. This helps your body keep it's natural rhythm by not exposing your eyes to bright white/blue light in the evening.


What is colour temperature?
Colour temperature is expressed in Kelvin and if something is orangey red looking than it has a lower value and if it's broad daylight, with a bright white light, it has a higher value (approx 6500K). 


So how does flux work?
Fluorescent lighting is around 4100K so it has a slight orangey look, this was often highlighted on early digital cameras. Your eye does a great job of compensating for colours and you barely notice it after a while. Until, that is, you put your computer on with it's bright screen. This is why people using a PC at night often have a blueish glow on them, because these colours are not provided by the surrounding lights. With f.lux installed you can compensate for these lighting environments and the program is customisable to your lighting colour temperature. And to make life easier, f.lux knows when sunrise and sunset occur and automatically adjust the screen colours for you.


This is a really small app and it does exactly what it says on the tin, check it out today!

Rating 4/5
Price - Free
Developer - http://stereopsis.com/flux