Introduction to the quantum mechanical model of the atom: Thinking about electrons as probabilistic matter waves using the de Broglie wavelength, the Schrodinger equation, and the Heisenberg uncertainty principle. Electron spin and the...

Provides a long list of physics formulas for easy reference.

Several pages from an excellent site which describe the science of spectroscopy. The unique atomic emission (and absorption) line spectrum of elements are illustrated and explained. Includes a Java applet depicting the quantum energy...

Several pages with an interesting discussion of the visible light spectrum and atomic absorption and emission line spectrum. Features excellent graphics, thorough and understandable discussion, and many interactive Java applets.

The Pauli Exclusion Principle shows how electrons fill atomic orbitals. Includes biographical information on Wolfgang Pauli.

This site from the University of Colorado at Boulder has great information on the Pauli Exclusion Principle. Pictures are provided along with links to additional information. The information provided is not in-depth and it is...

The Pauli Exclusion Principle requires that all electrons in an atom have unique energy levels.

A lovely biographical piece about Ernest Rutherford. A number of personal notes, along with extensive information about the physics work he did. Nice quote at the end.

A collection of video lectures from course investigating the theory behind modern physics taught at Stanford University. The course introduces the basic concepts of particle physics by teaching about light, quantum field, Diary Equation,...

A collection of audio lectures from an introduction to astrophysics course taught at the University of California, Berkeley. The course discusses the solar system, stars, quantum mechanics, gravitation, and cosmology focusing on how...