Digital library
Textbooks, references and open learning resources.

External
Physics
Boundless · LibreTexts
In the contents: 27: Special Relativity · 27.2: Consequences of Special Relativity · 27.4: Implications of Special Relativity

External
Classical Mechanics
Jeremy Tatum · University of Victoria
In the contents: 15: Special Relativity · 15.04: Speed is Relative - The Fundamental Postulate of Special Relativity

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Phys 111: Physics, Symmetry, and Conservation
Mitch Powers · Gettysburg College
In the contents: 03: Relativity (in progress) · 3.02: The Relativity Principle · 3.A: Relativity (Answers)

External
PH246 Calculus Physics II (2025)
Nathan Lindy · Grand Rapids Community College
In the contents: 14: Relativity · 14.01: Prelude to Relativity · 14.03: Relativity of Simultaneity

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Conceptual Physics
Benjamin Crowell · Fullerton College
In the contents: 2.2.03: 1.3 Galilean Relativity · 2.08: Relativity · 2.8.04: General Relativity (optional)

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AST102: GC OER
Ryan Johnson · Gettysburg College
In the contents: 6.03: Mass Energy and the Theory of Relativity · 11.02: Introducing General Relativity · 11.03: Remarks on General Relativity

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Astronomy 2e Openstax
Rachel Mastrapa · De Anza College
In the contents: 19.04: Mass Energy and the Theory of Relativity

External
The Fundamentals of Stellar Astrophysics
George W. Collins II · Ohio State University
In the contents: 6.02: Field Equations of the General Theory of Relativity

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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: 9.04: Einsteins Theory of General Relativity · 24: The Theory of Special Relativity · 24.05: Electric and magnetic fields and Special Relativity

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Survey of Physics
Kolo Wamba · Skyline College
In the contents: 1.03: 1.3 Galilean Relativity

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Leading with Cultural Intelligence
Anonymous · LibreTexts
In the contents: 6.03: Linguistic Relativity

External
SOC 300: Introduction to Sociology (Ninh)
LibreTexts
In the contents: 1.4.02: Social Control and the Relativity of Deviance

External
Introductory Physics: Building Models to Describe Our World
Ryan D. Martin, Emma Neary, Joshua Rinaldo, and Olivia Woodman · Queen's University
In the contents: 9.04: Einsteins Theory of General Relativity · 24: The Theory of Special Relativity · 24.05: Electric and magnetic fields and Special Relativity

External
College Physics
OpenStax · LibreTexts
In the contents: 28: Special Relativity · 28.00: Prelude to Special Relativity · 28.E: Special Relativity (Exercise)

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SOC 300: Introduction to Sociology
Block · Sacramento City College
In the contents: 5.02: Social Control and the Relativity of Deviance

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ASTR 110: Astronomy
John Fitzgerald · Grossmont College
In the contents: 9.06: Mass Energy and the Theory of Relativity · 12.07: Introducing General Relativity · 12.09: Tests of General Relativity

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ANTH 205: Cultures of the World - Perspectives on Culture
Crystal Scheib · HACC, Central Pennsylvania's Community College
In the contents: 5.06: Linguistic Relativity

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MC : Physics 213 - Modern Physics
Charles Collett · Muhlenberg College
In the contents: 01: Relativity · 1.01: Prelude to Relativity · 1.03: Relativity of Simultaneity

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UCD: Physics 9D - Modern Physics
Tom Weideman · University of California, Davis
In the contents: 2: Foundations of Special Relativity · 2.1: The Relativity Principle · 3: Kinematics in Special Relativity

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Vol. 2: An Introduction to the Solar System
Neeharika Thakur · Prince George's Community College
In the contents: 2.6.2.03: Mass Energy and the Theory of Relativity