fcc to ccp

fcc to ccp starting from a face-centred cubic unit cell shown in the conventional representation, the unit cell is rotated to show that it is also a cubic close-packed cell.  This video has no sound track.

caesium chloride

caesium chloride the conventional unit cell is rotated about the z axis and then rotated to show the 3-fold symmetry before returning to the original view. This video has no sound track.

rutile

rutile the unit cell rotating. This video has no sound track.

corundum

corundum showing tetrahedral environment of O. This video has no sound track.

fluorite

fluorite unit cell rotating about one axis. This video has no sound track.

superconductor

superconductor rotation of unit cell of La2CuO4 and change of representation to show Cu-O planes. This video has no sound track.

Faujasite

Faujasite a line representation of the zeolite faujasite, which is shown rotating. This video has no sound track.

Movie 14: Polarizers

A polarizer cuts out some of the light from a light table. When a second polarizer is added, what we see depends on the relative orientations of the two polarizers. If they are oriented the same way, some light is blanked out. But if they are rotated so that they are in perpendicular orientations, as so-called crossed polarizers, all the light is cut out.

Movie 15: Stress Between Polarizers

This plexiglass system is on a light table, with one polarizer below it and another one above it; the polarizers have opposite orientations, i.e. they are crossed. When stressed, we see color associated with stress polarization, as seen on the front cover of "Physical Properties of Materials". When the stress is removed, the color disappears.

Movie 16: Polarizers and Birefringence

As seen through a birefringent crystal, text is doubled. But if we put a polarizer in front, we only see one image. If we rotate the polarizer, we see the other. This demonstration shows that the two beams arising from the birefringent material have different polarizations of light.

Movie 24: Floating Magnet

Movie 1: Magnetic Levitation of Superconductor

A box filled with superconducting materials cooled below their superconducting transition temperature moves above a magnetic track. Movie taken at the Toshiba Museum, Kawasaki, Japan.