Flourescence Spectroscopy - Nov 16, 2008

Try this Visual Quantum Mechanics simulation of a fluorescent light to explore the relationships among energy levels, excitation energy, and emitted light.

On another subject, watch for the conjunction of Jupiter and Venus on November 30-December 1, 2008.

Kepler Motion - Nov 1, 2008

For applets that illustrate Kepler's laws, visit this National Taiwan Normal University site Kepler Motion.

Polarized Light Mosaic - Oct 16, 2008

To make colorful images with polarizers and tape, visit Polarized Light Mosaic.

Molecular Expressions: Introduction to Flourescence - Nov 16, 2008

See Molecular Expressions: Introduction to Flourescence for a description of fluorescence in terms of photon absorption and emission and atomic energy levels, including a related Java simulation, and an introduction to fluorescent microscopy. For more on this last subject, see Fluorescent Microscopy.

SolStation: Saturn - Nov 1, 2008

Visit SolStation: Saturn for a well-illustrated look at Saturn, starting with the latest research and including the planet itself, the rings, and the moons.

Physics 2000: Polarization - Oct 16, 2008

To learn more about polarized light, visit Physics 2000: Polarization. For more images showing polarization effects, see the Hyperphysics page Polarization and Interference Colors.