What is color? - Colm Kelleher

Watch the whole lesson on http://ed.ted.com/lessons/how-do-we-see-color-colm-kelleher

Have you ever wondered what color is? In this first installment of a series on light, Colm Kelleher describes the physics behind colors-- why the colors we see are related to the period of motion and the frequency of waves.

Lesson by Colm Kelleher, animation by Vitreous.