Post any helpful references that you find in this thread, for the benefit of others. Also include a short description. I will try to categorize things by subject (i.e. particle physics, gravity, etc.). Leave a link, and a short explanation of what is at the link, and I will put it in its appropriate place in this thread.

Motion Mountain Free Physics Textbook

Free for download in pdf.

Open Text

This is a project by a former professor of mine (Walter Wilcox) to make free textbooks available to grad students. Included are textbooks on quantum mechanics, classical mechanics, and electrodynamics. These are good references, I think, although you have to watch out for typos. I have solutions to all of the problems in the electrodynamics book, if anyone is ambitious.

Lecture Notes in General Relativity

A textbook by Sean Carroll.

Particle Data Group

A complete listing of all known particles, and their measured properites. Also includes reviews on everything from statistics to grand unification.

Quantum Field Theory

Free pdf version of Mark Srednicki's QFT text book. I have used this book on occasion---it is easy to follow and is a good compliment to something like Peskin.

Weak Interactions in Particle Physics

Free textbook by Howard Georgi, about weak interactions. I've never studied from this book, but Georgi was one of the founders of the subject, so I feel confident that he knows what he is talking about.

Semi-Simple Lie Algebras and their Representations

Once you had to pay for this book, but it is a very good introduction to some of the necessary maths for particle physics. By Robert Cahn.

WMAP. The marquee experiment for cosmology. WMAP measures temperature fluctuations when the photons first decouple from the plasma that is filling the early universe. This happens at t=380,000 years or so. WMAP has given us some truly remarkable information about the Big Bang and Inflation.

This is something that never really caught on, despite my best hopes Either way, here is a link to the thread (which has been unstuck) if anyone is interested in interesting physics, as explained by SciForums members:

http://www.sciforums.com/showthread.php?t=74474

**General Physics**Motion Mountain Free Physics Textbook

Free for download in pdf.

**Classical Mechanics/Electrodynamics**Open Text

This is a project by a former professor of mine (Walter Wilcox) to make free textbooks available to grad students. Included are textbooks on quantum mechanics, classical mechanics, and electrodynamics. These are good references, I think, although you have to watch out for typos. I have solutions to all of the problems in the electrodynamics book, if anyone is ambitious.

**General Relativity**Lecture Notes in General Relativity

A textbook by Sean Carroll.

**Particle Physics**Particle Data Group

A complete listing of all known particles, and their measured properites. Also includes reviews on everything from statistics to grand unification.

Quantum Field Theory

Free pdf version of Mark Srednicki's QFT text book. I have used this book on occasion---it is easy to follow and is a good compliment to something like Peskin.

Weak Interactions in Particle Physics

Free textbook by Howard Georgi, about weak interactions. I've never studied from this book, but Georgi was one of the founders of the subject, so I feel confident that he knows what he is talking about.

Semi-Simple Lie Algebras and their Representations

Once you had to pay for this book, but it is a very good introduction to some of the necessary maths for particle physics. By Robert Cahn.

**Cosmology.**WMAP. The marquee experiment for cosmology. WMAP measures temperature fluctuations when the photons first decouple from the plasma that is filling the early universe. This happens at t=380,000 years or so. WMAP has given us some truly remarkable information about the Big Bang and Inflation.

**SciReources**This is something that never really caught on, despite my best hopes Either way, here is a link to the thread (which has been unstuck) if anyone is interested in interesting physics, as explained by SciForums members:

http://www.sciforums.com/showthread.php?t=74474

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