University of Colorado
University of Colorado: Physics 2000: Temperature and Absolute Zero
A thorough, multipage discussion of color and color television sets that explains how an image is formed on the television using red, green, and blue light. Understandable discussion, excellent graphics, and many interactive Java applets.
Science4Fun
Science4 Fun: Television
Brief discussion of the invention of the television and the different generations from mechanical televisions to modern digital TVs.