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Charting the history and development behind major discoveries and introducing the remarkable minds who conceived them, this guide provides an in-depth insight into the scientific breakthroughs and brilliant inventions that have shaped our world. Trace how trains, boats, computers and the internet evolved through history. This book has plenty of photographs and illustrations as well as more than 100 do-it-yourself experiments and model-making projects to explain exactly how things work. These include making model rails and tunnels, a diving submarine, an electric motor.