http://www.astronomycast.com/archive/

From May 25, 2009.

Last week (May 18, 2009) we took a peek into the tiny world of quantum mechanics, and its unintuitive, but very accurate mathematical predictions. And although we all appreciate the physics lesson, you're probably wondering what this all has to do with astronomy. Well, today we bring it all home and explain how quantum mechanics has given astronomers one of the most powerful tools they have to study the nature of the cosmos.

Spectra — an excellent overview by James B. Kaler

Doppler Shift — UCLA

Continuum Radiation — Physics Myths

The sun is green! From The Color of the Sun — Scientific Blogging

Blackbody radiation — GSU

Elemental composition of the Sun — About.com

Deuterium — Wiki

Grism is a combination of a prism and grating to create a dispersed spectrum.

Spectroscopy and Astronomy — UCLA

Slit Spectroscopy — Gemini Telescope

Balmer Series — Internet Encyclopedia of Science

Hydrogen Alpha Explained — Solar Observing (H-alpha spectral line is at 656.3 nanometers)

Using Laser Combs to Find Exoplanets –– Universe Today

Hydrogen Spin Flip Transition — Wolfram

Zeeman Spectral Line Splitting — NOAO

[These are very old links, so some may be dead… Rich]

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