Paschen Series
Recombination Lines of Atomic Hydrogen:
| VACUUM | VACUUM | ||
| TRANSITION | WAVELENGTH | FREQUENCY | I/I(Hbeta) |
| (Nu-NI) | (microns) | (cm -1) | Te=Ne=10**4 |
| 4-3 | 1.8756 | 5531.55 | 0.332 |
| 5-3 | 1.2822 | 7799.33 | 0.162 |
| 6-3 | 1.0941 | 9139.8 | 0.0901 |
| 7-3 | 1.0052 | 9948.1 |
most frequencies calculated from f = 109677.57 * [(1/Nl)**2 – TRG