Where does light come from? How does it work? What is it made of? Join a young girl and her cat on a journey of scientific discovery to find the answers to these questions and more. Over the course of a summer holiday, the pair investigate the many fascinating aspects of light, including natural and artificial light; the many uses of light; how light can be absorbed, reflected and refracted; the meaning of opaque, translucent and transparent; how the eye sees light; and why some animals need less light to see than humans. Our guides offer readers an intriguing and lyrical introduction to light and all its mysteries.