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Information and Entropy; Energy and Exergy

Explore the fundamental physics behind the origins of the climate crisis, including entropy, information theory, and exergy.

Information and Entropy; Energy and Exergy

Explore the fundamental physics behind the origins of the climate crisis, including entropy, information theory, and exergy.

If energy is conserved, how can we have an energy crisis? Why is it harder to pull CO2 out of the atmosphere than it is to put it in?

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This online course from the MIT Department of Physics will teach you how to answer these questions through an exploration of fundamental physics. Designed for global citizens who wish to better understand the origins of the climate crisis and contribute to our energy transition, as well as those interested in information theory, this course explores three different approaches to understanding entropy. It also covers the following topics:

  • Why more is different
  • Probability
  • information theory
  • irreversibility
  • the 2nd Law of Thermodynamics
  • temperature and heat capacity
  • Carnot cycles and efficiency
  • Entropy of mixing

The course ends with an introduction to the idea of exergy (not energy) as the quantity that we produce in power plants and use to run our technology. We apply this idea to examples such as the calculation of different energy (really exergy) storage technologies.

What you'll learn

  • Basic probability applied to large numbers
  • Introduction to thermodynamics and entropy
  • Introduction to statistical mechanics
  • Entropy of Mixing
  • Exergy

Prerequisites

8.01.2x – Classical Mechanics Energy Conservation, Collisions

Meet your instructors

  • Featured image for Krishna Rajagopal
    William A. M. Burden Professor of Physics
  • Featured image for Peter Dourmaskin
    Senior Lecturer in the Department of Physics at MIT
  • Featured image for Michelle Tomasik
    Lecturer in the Department of Physics at MIT
  • Featured image for Alex Shvonski
    MITx Digital Learning Fellow, Physics at Massachusetts Institute of Technology
  • Featured image for Aidan MacDonagh
    Senior Technical Instructor

Who can take this course?

Because of U.S. Office of Foreign Assets Control (OFAC) restrictions and other U.S. federal regulations, learners residing in one or more of the following countries or regions will not be able to register for this course: Iran, Cuba, Syria, North Korea and the Crimea, Donetsk People's Republic and Luhansk People's Republic regions of Ukraine.