This text focuses on introducing students to the postulates and general principles of quantum mechanics. Approximations based on variational method and time independent perturbation theory. Application to harmonic oscillator, rigid rotor, one-electron and many-electron atoms, and homo-and hetero-nuclear diatomic molecules.

This virtual textbook allows for visualization of 3D-molecular models while teaching principles of Organic Chemistry. Before his retirement in 1999, Professor William Reusch began working on a virtual organic chemistry textbook that could be used by anyone with an interest in the subject. On this site, visitors can take advantage of his labors, and the introduction to this important subject offered on the homepage is a great place to start. After entering the main area of the site, visitors will find two columns of links that serve as the main table of contents. There are over twenty five topics covered here, and they include aromaticity, alkyl halides, alcohols, and amines. Each area contains lucid text accompanied by well-organized diagrams. Additionally, the site contains practice problems, incorporated into the text, along with links to external institutions such as the University of Wisconsin that offer additional problems. One area that shouldn't be missed is the "Chemicals and Society" area. Here visitors will find a narrative essay that addresses how the incorporation of different chemicals into air, water, and soil may affect human society over time.