Nothing beats a beautiful sunset and even if you can't be on a beach enjoying one in person, we've got the next best thing. Crimson Skies is a breathtaking slideshow of some of the most beautiful red sunsets you have ever seen. Beware though, this screensaver is guaranteed to make you want to stop working early! Crimson Skies is a free screensaver created by RateMyScreensaver.com containing 11 high quality photographs. The red hues of the sky at sunset and sunrise are caused by Mie Scattering, not Rayleigh Scattering. The colours of the sky throughout the day and at sunrise and sunset, are explained by the phenomena of both Rayleigh Scattering and Mie Scattering. The colour of the sky described by Rayleigh Scattering applies to the hues of blue, violet and green, not to the reds, oranges, peaches and purples of sunrise and sunset. Rayleigh Scattering is scattering of shorter wavelength light (e.g. blue & violet) by air atoms and molecules (not statistical variations in density of the Earth's atmosphere). The magnitude or strength of Rayleigh Scattering varies by the reciprocal of the wavelength raised to the fourth power, and hence does not explain the beautiful variations of reds, purples, oranges and peachy colours. - wiki Screensaver Picture Count: 11 Screensaver Type: Slideshow Credit: All images in this screensaver fall under one of the following licenses: Creative Commons, Attribution ShareAlike 2.0, public domain, GNU Free Documentation License