When we think of light, we think of sunshine or the colors of the rainbow. But colors, like sounds, are limited by the range of our senses. Just as there are sounds that we cannot hear because the pitch is too high or low for our ears to detect, so there are colors whose color pitch is too high or low for our eyes to detect. We think of light as the colors of the rainbow, which really is just a tiny part of a much broader spectrum that our eyes cannot see. Less