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This definitive textbook traces the flow of energy from sources such as solar power, nuclear power, wind power, water power, and fossil fuels through its transformation in devices such as heat engines and electrical generators, to its uses including transportation, heating, cooling, and other applications.
To understand energy and conservation of energy, we must first define some terms: work, kinetic energy (KE), and potential energy (PE). We’ll get to PE in the next Chapter.
Part I – Energy and its Uses. 2. Units and scales of energy use (PDF - 1.1MB) 3. Mechanical energy and transport (PDF) 4. Heat energy: Conversion between heat and mechanical energy (PDF ‑ 2.9MB) 5. Electromagnetic energy: Storage, conversion, transmission and radiation (PDF - 7.7MB)
Energy •Energy is a scalar* quantity (a number) that we associate with a system of objects, e.g., planets orbiting a sun, masses attached to springs, electrons bound to nuclei, etc. •Forms of energy: kinetic, chemical, nuclear, thermal, electrostatic, gravitational.... •It turns out that energy possesses a fundamental
Energy resources are key limiting factors to economic growth. The world use of energy resources, especially oil, continues to grow, with ominous consequences economically, socially, politically, and environmentally. We will briefly examine the world’s energy use patterns at the end of this chapter.
istics of energy sources. The transformation of energy from one form to another is considered, together with t. e role of energy storage. Chapter 2 deals with the properties of the atomic nucleus, nuclear forces and radioactivity, and forms a foundation for the understanding of nuclear f.
Understanding the physics of energy means learning about two sorts of things. - What general principles unify the physics of energy - applying to energy in all its different forms. - How does each particular form of energy work. We’ll start with the general principles.
