| 1 | This is what spectroscopy is. | |
| 2 | They made spectroscopy a primary tool of chemical analysis . | |
| 3 | S This is s. S, according to spectroscopy, 0 means that l equals zero. | |
| 4 | And if we're talking about things in spectroscopy terms here, this is what we call a doublet. | |
| 5 | Yes, and this is a good example of how important spectroscopy is in astronomy. |
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