Limitation of color. There is, of course, a limit to how far the use of color can take us. A single color can help us visualize a field that is otherwise invisible, but it cannot inform us about the complexity of the field - and the fields we will encounter are complex. The EM field, for example, contains both electric and magnetic components, each of which has a direction associated with it, yet we will picture it simply as a green field. Also the use of color cannot convey the quantum nature of the fields-the fact that each field, be it green or yellow, is made up of many individual pieces that keep their own identity, overlapping as they may be. The colors can help us picture the fields as "being there", but they don't tell the whole story.
( Rodney A. Brooks )
[ Fields of Color: The theory ]
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