Daily Archives: January 23, 2013

Color Redux

Color DemoIn Monday’s post I started writing about light and color. I described how white light can be created by adding three primary colors (red, green, blue), and how mixing any two result in secondary colors (yellow, cyan, magenta).

I went on to describe how subtracting two of the secondaries gives you the primary color they have in common, and how subtracting all three filters out all color, giving you black. The secondary combinations are the negative of the primary ones (e.g. blue is “anti-yellow”).

Finally I touched on how color is the “pitch” (frequency) of light. X-rays, radio waves, microwaves and gamma rays are all forms of light.

Today I continue the topic by exploring some details and nuances.

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