thanks,
getting there...

danke sehr,
ich begin es mehr zu verstehen.
(mein Deutsch is nicht sehr gut, entschuldigung)

hey,

I'm a student commercial engineering and because of the engineering part, we have to take some course that I wouldn't be taking if I didn't have to. :roll:
One of the possible questions on the examination will be :'Why can't pure neon or helium lasers work?'
Is there someone who could explain ...