This book is about light. Specifically, having fun with light. Tricking light into doing fun and amazing things. Tricking the eye into looking at things in a new way. We will explore things of all sizes with light, from galaxies to things you can hold in your hand, to things that can live inside you. We will play with time, speeding it up and slowing it to a standstill. We will break light apart and put it back together. And usually, we will do all of this with things you find around the house that won't cost you an arm and a leg. Here we will show you how to grind your own microscope lens in a half hour. We'll show you how to make scientific instruments out of plumbing parts. We will use computers to overcome the limits of optics and cameras. But mostly, we'll have a lot of fun playing around.