Wikibooks:Physics bookshelf
Bookshelves have been phased out in order to move to subjects. The corresponding subject that has replaced this bookshelf is Subject:Physics. 
Please see the ranking discussion subpage to discuss the organization of this bookshelf. An effort has been made to think about ranking the physics textbooks from most simple to most advanced. This page also collects related wiki links and external links (particularly nonwiki online physics textbooks). 
Alphabetical
AMo  MuZ  

Alevel Physics  Multibody Mechanics  
Acoustics  Nanotechnology  
Astronomy  Physics231  
Astrophysics  Physics Study Guide  
Basic Electrical Generation and Distribution  Physics with Calculus  
Electronics  Solid Mechanics  
Engineering Thermodynamics  String Theory  
General relativity  Special relativity  
Introduction to Physical Science  Statistical Mechanics  
Kinematics  Theoretical Mechanics  
Marine Hydrodynamics  This quantum world  
Microtechnology  Vibrations of Structures  
Modern Physics  Waves 
Categorized by subject
General
Mechanics
 Classical mechanics  This will be a "minimal standard course" of classical theoretical mechanics.
 Mechanics
Energy and Power
 Energy and Power  This course will be an introduction to energy and power within a societal context.
Electromagnetism
Thermodynamics
Quantum mechanics
Relativity
Special Relativity is an introductory text for physics undergraduates and advanced high school students. It is also approachable by the educated layman. It is carefully designed to tackle the physics of simultaneity.
Optics
 Optics  Suitable for high school students.
Acoustics
Micro and Nanotechnology
 Microtechnology  handbook of microfabrication and microtehcnology
 Nanotechnology  handbook of nanoscience and nanotechnology
 Carbon Nanotube Cookbook
Study Aids
History of Physics
Categorized by audience and level
Middle School
High School
 FHSST Physics  A free high school student textbook on physics
 GCSE Science/Electricity  A simple book for students aged 14  16.
 Optics  Suitable for high school students.
 Physics with transforms  new invention  A new mnemonic for learning classical physics formulas using Euclidean geometry. It also serves to geometrically correlate classical physics formulas together. For high school & up.
 High school physics  High school physics for the MTV literate.
 SAT II Physics  Preparation for the College Board exam.
 HSC Physics A physics textbook for Year 12 Australian high school students (Syllabus is closest to NSW)
 Physics  For dummies, rebels and humans  A free textbook for Physics  the ultimate goal being to teach the student how to learn by himself.
 Solved Question Papers  IIT JEE
 Solved Question Papers  AIEEE
Hobbyist
 Waves
 LearnElectronics More hands on experience.
 Table of nuclides  Table with all nuclides
Undergraduate
 Physics Exercises
 Electronics  Somewhat more advanced, for hobbyists or first or second year college level.
 Alevel Physics  For students taking Physics at Alevel.
 Alevel Physics (Advancing Physics)  For students taking the OCR Physics B (Advancing Physics) course at Alevel.
 Physics Study Guide  Overview of equations, basic terms, and variables for algebrabased physics course.  Suitable for A level/ advanced highschool or first year undergraduate.
 Physics with Calculus  Undergraduate textbook, first and secondyear level
 Physics practice questions (with solutions)
Advanced undergraduate
 Mathematical methods of Physics
 Modern Physics  A fulllength undergraduate textbook. Includes Electromagnetism, Quantum Mechanics, and Thermodynamics and statistical mechanics.
 Solid Mechanics
 Introduction to Theoretical Physics  From First Principles to Newtonian Mechanics to General Relativity
 Classical mechanics  This will be a "minimal standard course" of classical theoretical mechanics.
 Engineering Thermodynamics
 Heat Energy Transfer
 Physics in the Language of Geometric Algebra. An Approach with the Algebra of Physical Space
 Basic Physics of Nuclear Medicine
 This Quantum World
Postgraduate
 Interpretations of Quantum Mechanics and Quantum Field Theory
 General relativity  Post graduate / advanced undergraduate
 Quantum field theory  Postgraduate
 Supersymmetry
 String Theory & MTheory
Related Wikimedia Projects
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Related books
Related bookshelves
Other online resources
Wikinode: Other physics wiki
 Qwiki is a quantum physics wiki devoted to the collective creation of content that is technical and useful to practicing scientists.
 SklogWiki.org is a wiki for anyone interested in thermodynamics, statistical mechanics and the computer simulation of materials, especially liquids and soft condensed matter.
Offsite physics books
 Physics book series by Ben Crowell.
 A Radically Modern Approach to Introductory Physics by David J. Raymond, GFDL license
 Introduction to optics (PDF) Lecture notes from the University of Calgary. Includes some nice images.
 The Slacker's Guide to Physics: Electricity and Magnetism
 Structure and Interpretation Of Classical Mechanics A Lagrangian and Hamiltonian mechanics text using computational tools online
 Lagrangian and Hamiltonian Mechanics: A short introduction Online at University of Arizona.
 OPEN TEXT physics books
 Introductory Physics by Charles Edward Pax, published under the GNU General Public License (GPL).
 Grains of Mystique: Quantum Physics for the Layman by Thomas Haberkern and N Deepak, copyrighted 2002, licensed under Open Publication License http://www.ndeepak.info/qp
 Lessons In Electric Circuits Copyright © 20002003, Tony R. Kuphaldt published under the "Design Science License", which allows for free copying, distribution, and/or modification of this document by the general public. http://www.ibiblio.org/kuphaldt/electricCircuits/
 CalculusBased Physics I & II by Jeffrey Schnick
 Public domain, calculusbased physics book in PDF format.