This book explains what a laser is and the principles of light necessary for understanding laser technology. The book also describes how lasers came to be and how they are used as well as what the future of lasers may hold. Author/Illustrator biography Educational front/back matter Glossary of key words Index Infographics Phonetics Photo captions Sources for further research Suggested websites Table of contents Timeline of key events How do cell phones work? What happens when you flush a toilet? How can an airplane fly? Through diagrams, step-by-step explanations, and plenty of humor, this series explains the workings of everyday gadgets, tools, and technologies. Each title also addresses the history of each invention and its social significance. How has this technology evolved? How is it changing our planet? Young readers' worlds will expand when they find out How Things Work! Additional features such as a table of contents, a phonetic glossary, original illustrations and diagrams, informative captions and sidebars, a time line, sources for further research, an index, and introductions to the author and illustrator are included to aid comprehension

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