? In this photo of the Aurora Borealis (Northern Lights) we see a view of Northern Lights from above, as captured by astronauts on board the International Space Station. // < // CONTENTS // ’ Introducing Light 9 // 1 Radio Waves 25 // Spanning the Spectrum: The Speed of Light 34 // 2 Microwaves 42 // Spanning the Spectrum: Leaking Light 54 // 3 Infrared 64 // Spanning the Spectruity Reflection 78 // 4 Visible Light S6 // Spanning the Spectrum: Refraction--! 00 // 5 Ultraviolet 108 Spanning the Spectrum: Fluorescence ! 20 // 6 X-rays 134 ; // Spanning the Spectrum: Atomic Collisions 148 // 7 Gamma Rays 158 // Spanning the Spectrum: Electric Discharge 170 // Epilogue 1 81’ // Spanning the Spectrum: Shadows 1 88 // Acknowledgments 1 96 Further Reading 1 97 Image Credits 198 Index 200