SYmmetryFInder 
An interactive/animated treatment of molecular (point) symmetry and lattice (space) symmetry, elements and operations. 23 molecules, some as enantiomeric pairs, illustrate the most important point groups:
(Ih, Oh, Td, Sn, Cnh, Cnv, Cn, Dnh, Dnd, and Dn). Molecule list
Also 1-dimensional lattice lattice symmetries using HCl, polythylene and CO2 as examples of space elements/operations, and with 1- and 2-molecules per cell symmetries.
(2-dimensional symmetries are under development).
Electron Orbit Motion
Includes animations of Bohr and 'Newtonian' possibilities for electron motion about a nucleus (the Newtonian animation is interactive).
Discusses principles at work for motion in 2 dimensions, with critiques of which classical motion possiblities are incorrect and of the classical comcepts which do carry over to the quantum model.
The importance of angular momentun and its origin is developed, for use in the sections on photons and magnetism.
Photon Emission/Absorbtion
Presents the link between electron acceleration and photon creation/absorbtion. Derives the implied physical properties of the photon, with a review of the famous experiment by Hertz.
Creation of a photon by a Bohr atom is discussed in classical terms, with focus on the energy, momentum and force properties for the photon.
The issue of photon chirality is explored.
Atomic Magnets
Presents in classical terms the origin of atom orbital magnetism, its relation to orbital angular momentum and the behavior of atoms immersed in a magnetic field.
[This text is under development as of February 2005. An animation is currently available.]