Humphreys series

In principal quantum number n equals 6. It begins at 12368 nm and has been traced to 3281.4 nm.

n	7	8	9	10	11	12	13	14	15	16	17
Wavelength (nm)	12368	7503	5905	5129	4673	4374	4171	4021	3908	3819	3749	3281

Although this is the last series designated by a name, there are series for transitions from lines of the n-7, n-8, n-9, and n-10 series.

See also

• Astronomical spectroscopy
• Bohr model
• H-alpha
• Rydberg formula