A Conversation for Absorption and Emission Lines
Another good article
Menza Started conversation May 5, 2000
Well the title said it all really. But just as a thought, you could add something about fluoresence. 
Another good article
Menza Posted May 5, 2000
Its just an idea that I thought was quite closely related.
Another good article
Bob McBob Posted Oct 15, 2003
This is a good article and covers the topic well.
You could go on to say how absortion lines are used in to determine the red and blue shift of galaxies and stars, ie: their recession velocities.
Key: Complain about this post
Another good article
More Conversations for Absorption and Emission Lines
Write an Entry
"The Hitchhiker's Guide to the Galaxy is a wholly remarkable book. It has been compiled and recompiled many times and under many different editorships. It contains contributions from countless numbers of travellers and researchers."