![What is color? - Colm Kelleher What is color? - Colm Kelleher](https://i.ytimg.com/vi/UZ5UGnU7oOI/maxresdefault.jpg)
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.
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