I have an assignment to 'Research ionization energy levels and come up with 3 real world applications'. I'm not so sure how to do this. Any help would be appreciated.

4 answers

Look up Lasers
Look up plasma arcs
Look up neon lights
Do these three things have ionization energy levels? To be honest, I'm not quite sure how ionization works.
http://en.wikipedia.org/wiki/Ionization
I'm still having a little trouble. Is there any way you can explain the connection between lasers, plasma arcs and neon lights?