|Sep10-11, 12:06 PM||#1|
He II, O III lines?
I think this is a relatively straightforward question, but I can't find a simple answer for it on Google.
What do the Roman numerals stand for in He II and O III in relation to spectroscopy?
|Sep10-11, 12:53 PM||#2|
He I is neutral, He II is once ionized, etc. A clunky notation, to be sure-- kind of like how 2011 is the "21st century."
|Sep10-11, 02:51 PM||#3|
Thanks, that rings a bell alright - had a feeling it was something along those lines (no pun intended...) Cheers :D
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