Astronomy View all facts Glossary Help| Astronomy View all facts Glossary Help |
| abstraction > mathematical concept > number > quantity > radiation measurement > spectral feature > spectral line > hydrogen line > Paschen line > Pa alpha |
  | ||||
| Pa alpha comparison table | ||||
| Subject | has upper energy level | is a kind of | has wavelength | is an instance of |
|---|---|---|---|---|
| Paschen line | hydrogen line | |||
| Pa alpha | 4 | 18751 Å | Paschen line |
Up: Paschen line