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| abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > spectral line > spectral series line |
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| spectral series line comparison table | ||||||||
| Subject | has lower energy level | has specie | has definition | occurs in | has synonym | has series limit | is a kind of | has wavelength |
|---|---|---|---|---|---|---|---|---|
| Balmer line | 2 | hydrogen (H I) | The series lies in the visible portion of the spectrum. (Deuterium Hα is 1.785 Å short-ward of hydrogen Hα) | 3647 Å | hydrogen line | |||
| Brackett line | 4 | hydrogen (H I) | hydrogen line | |||||
| ionized helium Balmer line | ionized helium (He II) | ionized helium line | ||||||
| ionized helium Lyman line | 1 | ionized helium (He II) | 227 Å | ionized helium line | ||||
| ionized helium Paschen line | 3 | ionized helium (He II) | 2040 Å | ionized helium line | ||||
| Lyman line | 1 | hydrogen (H I) | 912 Å | hydrogen line | ||||
| Paschen line | 3 | hydrogen (H I) | 8204 Å | hydrogen line | ||||
| Pfund line | 5 | hydrogen (H I) | hydrogen line | far-infrared | ||||
| Pickering line | 4 | ionized helium (He II) | O star | ionized helium Brackett line | 3644 Å | ionized helium line |
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