Balmer Series
Recombination Lines of Atomic Hydrogen:
| VACUUM | VACUUM | ||
| TRANSITION | WAVELENGTH | FREQUENCY | I/I(Hbeta) |
| (Nu-NI) | (microns) | (cm -1) | Te=Ne=10**4 |
| 3-2 | 0.6563 | 15237 | 2.85 |
| 4-2 | 0.4861 | 20572 | 1.00 |
most frequencies calculated from f = 109677.57 * [(1/Nl)**2 – TRG