# Why can I split white light into separate colors with my eyes

I was sitting in a meeting at work today.

When I looked up there was a projector facing the rear wall letting out a very bright white light (the projection).

When I look right at it, all I could see was white light.

But as I illustrated below when I shifted my gaze away I saw the white light split into each individual color.

I was able to reproduce this repeatedly just by shifting my gaze.

Any explanation? Gama rays? Do I have a super power?

• If you squint very carefully through ever so slightly open eyes, you can sometimes see diffraction patterns with colours (different diffraction angles for different wavelengths) at the edges like tiny rainbows. The works best and night and it takes some practice. – WetSavannaAnimal Oct 4 '13 at 0:18

It's because of DLP projectors. In such projectors a 3-color wheel rotates in front of the light thus projects only one color at a time but very rapidly. Search google for DLP rainbow effect. It's common to see an be bothered by this.