Eyewitness: Energy

Here is a spectacular, thought-provoking, and highly informative guide to the fascinating story of energy. Superb full-color photography of original equipment, intricate scientific instruments, 3-D models, and revealing experiments bring to life the ideas and discoveries that have changed our perception of the universe. See plants that bend toward light, alternative energy in action, the first batteries, the food chain, photosynthesis in plants, and how telephones convert the human voice into electronic signals. Learn how energy is measured, how without energy there would be no life at all, why matches burn, why recycling makes the most of energy, how waterwheels work, how efficient light bulbs save electricity, and how geothermal energy creates hot water. Discover the link between friction and heat, the development of steam turbines, how magnets work, how to make air liquid, how to heat coal to produce gas, the difference between renewable energy sources and fossil fuels, why sugar gives you energy, and much, much more.