Imagine you are inside a dark closet. Everything around you looks black. You can't even see your own hands in front of your face. Why? Your hands are still there, but something important is missing-light! This in-depth look at light includes understanding light sources, incredible facts about our Sun, how light reflects off objects around us, and how our eyes use light to allow us to see. It also features topics such as shadows, making rainbows, and bioluminescence in the animal kingdom. This book is packed with activities including making shadow artworks, testing your own eyes' capabilities, and even designing a reflective safety jacket for a dog's night-time walk.