Well, to be honest, the motto of f.lux is “better lighting for your computer”. That is, this software is based on studies that say that during the day is beneficial to have a blue based light, while it’s bad at night for your sleep pattern; at night it is better to have a more “hot” light, so a reddish-orange based brightness should be better, this is the work of f.lux, this program do a transition of the brightness of your screen depending on time of the day and your latitude.
The software is available with a PPA for ubuntu 10.04 and later, to install it just type:
sudo add-apt-repository ppa:kilian/f.lux sudo apt-get update sudo apt-get install fluxgui
For other distro check the download page here, there is a tar ball available.
After that just setup your Latitude and Longitude and the Nightime temperature that you like (i’m testing Tungsten), and you are done.
As a first impression of the screen it will look a lot more yellow, but you’ll get used to that after a short time, it’s also possible to pause f.lux, if you need to do some graphic work where brightness is an important aspect.
I’m still undecided, brilliant little program or hoax?
To see it in action, on windows but on Linux it’s the same: