Color Physics
There are numerous webpages that describe these things in detail, so I will keep it short. Most of the physical properties of colors are things that you can do without knowing. Learning about this certainly won't hurt, but skipping over them shouldn't affect your ability to use colors in an effective way.
Color Physics
Technically speaking, colors are the way our brain, by use of our eyes, interprets electromagnetic radiation of a wavelenght between 350 and 750 nanometers.
The different wavelengths are seen as different colors, as in the spectrum below. You have probably seen a spectrum like this before. Electromagnetic radiation with a wavelength of over 750 nm is called infra-red, and radiation under 350 nm is ultra-violet.
Color Wheel
In color theory, we often talk about the color wheel. A color wheel is really just the spectrum twisted around so that the violet and red ends are joined. The color wheel is particularly useful for showing how the colors relate to each other and how you can create new colors by mixing two or more colors.
![[image]](http://mowser.com/img?url=http%3A%2F%2Fwww.colorsontheweb.com%2Fimages%2Fbottomcolor.gif)
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