Encyclopédie de l'énergie
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Encyclopédie de l'énergie
Encyclopédie de l'énergie
  • Thematics
    • theoretical bases
    • energy uses
    • fossil sources
    • Nuclear
    • hydraulic
    • other renewables
    • electricity
    • environment
    • new technologies
    • Energy economics and policy
    • World energy history
    • statistics
  • Authors
  • Institutions
  • Bibliographies
  • Who are we ?
    • Presentation
    • Sponsorship
    • correspondents abroad
    • your suggestions
  • Contact
  • Français

    theoretical bases

    Energy exists in various forms (mechanical, potential or kinetic, electrical, chemical, nuclear, thermal), but what is the principle that unites them? Where does the energy that forms the basis of all life on earth come from? Between the photosynthesis of plants and the traction of our vehicle, the laws of thermodynamics and entropy play a certain role. To go from principles to observable facts, several measurement systems are proposed: how to choose between them?

    Energy consumption and entropy release in the biosphere
    Energy consumption and entropy release in the biosphere
    8 October 2015
    Everybody feels comfortable with the notion of energy, but entropy is often considered as a more difficult concept to understand. Energy is part of the general curriculum in elementary schools and high schools for all students, but only college students graduating in hardcore sciences will learn about entropy. This lack
    • DEUTSCHER GuyDEUTSCHER Guy
    • Niveau de lecture
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