Light And Dark

What is light? Where does light come from? What is a shadow? Learn how we seelight and dark where they come from and how people use light and dark ineveryday li... » 

What is light? Where does light come from? What is a shadow? Learn how we seelight and dark where they come from and how people use light and dark ineveryday life. Each book in the My World of Science series explains sciencethat you see in the world around you and use every day. «