This web site is the home of Light and Matter Physics, a series of introductory textbooks available online for no cost. There are six main textbooks covering Newtonian Physics, Conservation Laws, Vibrations and Waves,...

MIT Open Courseware provides free and open resources from a broad range of classes. This Physics collection contains material from physics classes ranging from introductory physics to advanced graduate courses. The...

The Multimedia Physics Studios consists of a collection of GIF animations and accompanying explanations of major physics concepts. The animations cover common physics principles discussed in a first-year high school...

This is an English translation of the 1905 paper by Albert Einstein on Special Relativity. Updates have been made to the notation. The article appeared in the book The Principle of Relativity. The article showed that the...

The site contains three lectures of Professor Hans Bethe. The lecture topics concern the development of quantum theory; relations between the exciting theoretical/experimental breakthrough; and how quantum theory forced...