Simple explanations of complex ideas for your future genius! Written by an expert, Optical Physics for Babies is a colorfully simple introduction to the principles of linear optics. Babies (and grownups!) will learn the difference between reflection and refraction and why both are necessary to create wonderful things like rainbows. With a tongue-in-cheek approach that adults will love, this installment of the Baby University board book series is the perfect way to introduce basic concepts to even the youngest scientists. After all, it's never too early to become a physicist! Baby University: It only takes a small spark to ignite a child's mind.