This courseware is being developed by Dr. Yeung for giving you a virtual first-person experience on examining the structure of some important crystal lattices in Science. For best viewing of the 3D effect, please use the Netscape Navigator 4.x+ together with the SGI Cosmo Player 2.x+  (or other VRML enabled browser or plugin).

Preliminary Instructions

As a good starting, you are recommended to press the View-point command (PageUp or PageDown keys) to look at the lattice in certain preferred directions to show the crystal symmetry. Then, you may make use of the Rotate control to rotate the lattice. By moving the cursor (with left mourse button down) quickly for a short distance, you can make the lattice rotate continuously along your initial cursor direction.