| 释义 |
> as lemmasPaschen series Paschen series n. a series of lines in the infrared part of the spectrum of atomic hydrogen, with wave numbers represented by R(1/32 − 1/m2) (where R is the Rydberg constant and m = 4, 5,…), of which the first line has a wavelength of 1875 nanometres and the series limit is at 820 nanometres.< |