Browse Lessons

Lecture 1: Definitions of System, Property, State, and Weight Process; First Law and Energy

Lecture 2: Second Law and Entropy; Adiabatic Availability; Maximum Entropy Principle

Lecture 24: Relative Diffusion Fluxes; Thermoelectric Effects

Lecture 21: Introduction to Nonequilibrium Theory; Onsager Reciprocity and Maximum Entropy...

Lecture 23: Direct and Cross Effects; General Principles of Entropy Production; The Fourth Law

Lecture 22: Definition of “Heat&Diffusion” Interaction; Diffusive and Convective Fluxes

Lecture 3: Energy vs Entropy Diagrams to Represent Equilibrium and Nonequilibrium States

Lecture 12: Ideal Mixture Behavior; Work from Reversible Mixing; Entropy of Irreversible Mixing

Lecture 7: Availability Functions and the LeChatelier-Braun Principle

Lecture 14: Ideal Solution Model; Osmotic Pressure; Blue Energy; Minimum Work of Separation

Lecture 11: Allocation in Hybrid Power Production; Chemical Potentials and Partial Pressures

Lecture 6: Free Energies, Available Energies, and Stability Conditions

Lecture 18: Properties of Reaction; Heating Values and Exergy of Fuels; Adiabatic Flame Temperature

Lecture 5: Definition of Heat Interaction; First and Second Law Efficiencies

Lecture 13: The Gibbs Paradox; Shannon Information Entropy; Single Quantum Particle in a Box

Lecture 20: Chemical Kinetics; The Arrhenius Law; Degree of Disequilibrium; Principle of...

Lecture 4: Temperature, Pressure, Chemical Potentials; the Clausius Statement of the Second Law

Lecture 8: Few versus Many Particles: The Euler Relation; Review of Various Forms of Exergy (Part I)

Lecture 10: Review of Various Forms of Exergy (Part II); Allocation of Consumptions in Cogeneration

Lecture 17: Liquid-Liquid Spinodal Decomposition; Introduction to Systems with Chemical Reactions

Jerry from Uganda: An Open Learner's Story

2026 OE Global Conference Announcement

Lotfullah from Afghanistan: An Open Learner's Story

Bounded Differences Inequality (aka Azuma-Hoeffding Inequality)

Large Bipartite Subgraph

Linearity of Expectations

Extremal Set Theory: Sperner's Theorem

Existence of Graphs with High Girth and High Chromatic Number

Extremal Set Theory: Intersecting Families

Lower Bounds to Ramsey Numbers

Markov, Chebyshev, and Chernoff

Threshold for a Random Graph to Contain a Triangle

Independent Sets and Turán's Theorem

Crossing Number Inequality

Nader from Jordan: An Open Learner's Story

Jae-Min from South Korea: An Open Learner's Story

OCW Viajes de aprendizaje: La historia de Tomás

Maria From Brazil: An Open Learner’s Story

Lecture 12: Ethics and Markets

Lecture 22: Auctions, Part 1

Lecture 09: Search, Part 1

Lecture 14: Dynamic Competition, Part 1

Lecture 10: Search, Part 2

Lecture 13: Search, Part 3

Lecture 03: Price Discrimination, Part 1

Lecture 24: Advertising

Lecture 23: Auctions, Part 2

Lecture 15: Dynamic Competition, Part 2