Digital library
Textbooks, references and open learning resources.

External
Quantum Tutorials
Frank Rioux · College of Saint Benedict/Saint John's University
In the contents: 1.01: An Approach to Quantum Mechanics · 1.13: Quantum Mechanics and the Fourier Transform · 1.14: Quantum Mechanics and the Fourier Transform

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Introductory Physics: Building Models to Describe Our World
Ryan D. Martin, Emma Neary, Joshua Rinaldo, and Olivia Woodman · Queen's University
In the contents: 8.05: The Lagrangian Formulation of Classical Physics · 15: Fluid Mechanics

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Chem 322: Physical Chemistry II
Mary Crawford · Knox College
In the contents: 8.02: Linear Operators in Quantum Mechanics · 09: Postulates and Principles of Quantum Mechanics · 9.02: Quantum Operators Represent Classical Variables

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Introductory Physics: Building Models to Describe Our World
Ryan D. Martin, Emma Neary, Joshua Rinaldo, and Olivia Woodman · Queen's University
In the contents: 8.06: The Lagrangian Formulation of Classical Physics · 15: Fluid Mechanics

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Thermodynamics and Statistical Mechanics
V. Parameswaran Nair · City College of New York
In the contents: 07: Classical Statistical Mechanics · 08: Quantum Statistical Mechanics · 8.01: Prelude to Quantum Statistical Mechanics

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The Live Textbook of Physical Chemistry I
Roberto Peverati · Florida Institute of Technology
In the contents: 16: The Motivation for Quantum Mechanics · 16.02: Quantum Mechanics is Bizarre · 17: Classical Mechanics

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Concepts in Biophysical Chemistry
Andrei Tokmakoff · University of Chicago
In the contents: 09: Macromolecular Mechanics · 19.02: Classical Nucleation Theory

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Quantum States of Atoms and Molecules
Zielinksi et al. · Chemical Education Digital Library
In the contents: 02: Foundations of Quantum Mechanics · 2.0E: 2.E: Foundations of Quantum Mechanics (Exercises) · 2.0S: 2.S: Foundations of Quantum Mechanics (Summary)

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CHEM 110A: Introduction to Quantum Mechanics
Delmar Larsen · University of California, Davis
In the contents: 1.01: Blackbody Radiation Cannot Be Explained Classically · 02: The Classical Wave Equation · 2.E: The Classical Wave Equation (Exercises)

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CHM 311: Physical Chemistry I
Anderson Marsh · Lebanon Valley College
In the contents: 01: The Path to Quantum Mechanics · 1.01: Prelude to the Foundations of Quantum Mechanics · 1.02: Blackbody Radiation Cannot Be Explained Classically

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CHM 364 Physical Chemistry 2 (Grinnell College)
Elaine Marzluff · Grinnell College
In the contents: 1.01: Blackbody Radiation Cannot Be Explained Classically · 02: The Classical Wave Equation · 2.E: The Classical Wave Equation (Exercises)

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Chem 370: P-Chem 1 for Biophysical and Traditional Students (Gutow)
Jonathan Gutow · University of Wisconsin Oshkosh
In the contents: 8.01: Failures of Classical Physics · 09: Molecular Quantum Mechanics

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Physical Chemistry for Biological Sciences
Carey Southern · DePaul University
In the contents: 1.01: Blackbody Radiation Cannot Be Explained Classically · 2.03: Linear Operators in Quantum Mechanics · 03: Postulates and Principles of Quantum Mechanics

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Inorganic Chemistry
LibreTexts (Textmap of Housecroft's text) · LibreTexts
In the contents: 1.4A: Some Important Successes of Classical Quantum Theory · 1.05: An Introduction to Wave Mechanics · 1.5A: Wave Mechanics of Electrons

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Physical Chemistry
Delmar Larsen · LibreTexts Inc
In the contents: 1.01: Blackbody Radiation Cannot Be Explained Classically · 02: The Classical Wave Equation · 2.E: The Classical Wave Equation (Exercises)

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Quantum Mechanics
Michael Fowler · University of Virginia
In the contents: 1.01: Breakdown of Classical Mechanics · 1.02: Early Quantum Mechanics · 03: Mostly 1-D Quantum Mechanics

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Introduction to Quantum Mechanics
Delmar Larsen · University of California, Davis
In the contents: 1.1: Blackbody Radiation Cannot Be Explained Classically · 02. The Classical Wave Equation · 2.E: The Classical Wave Equation (Exercises)

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CHEM-UA 127: Advanced General Chemistry I
Mark E. Tuckerman · New York University
In the contents: 1.05: The classical view of the universe and the experiments that brought about its downfall · 1.06: Electron diffraction postulates of quantum mechanics the Bohr model and the Beer-Lambert law