Quote:
|
Originally Posted by Rob Instigator
all elements everywhere are the same for the most part. there are isotopes of course.
Mass spectrometric analysis can tell you the exact composition and the exact ratio of compounds in any object, no matter how far away it is.
|
for the
most part? mostly? almost? whut?
and isotopes can behave completely differently!
and you can't put a star/part of it in a mass spec! they've taken them into space to look at gas/particles on other planets though. A Spectrograph is not the same as a Mass Spectrometer!
Mass spectrometry (MS) is an analytical technique for the determination of the elemental composition of a sample or molecule. It is also used for elucidating the chemical structures of molecules, such as peptides and other chemical compounds. The MS principle consists of ionizing chemical compounds to generate charged molecules or molecule fragments and measurement of their mass-to-charge ratios.
http://en.wikipedia.org/wiki/Mass_spectrometer
http://en.wikipedia.org/wiki/Spectroscopy
someimes you are so rude when explaining things.