Ritz combination principle
[ rits ]
/ rɪts /
the principle that the frequencies of lines in atomic spectra can be represented as differences of a smaller number of terms, all characteristic of the emitting system, interpreted in quantum theory as the emission of exactly one photon in a transition between energy levels.
Principal vs. PrincipleIs the head of a school called a principal or a principle? These two words are frustratingly similar, leaving even the most experienced English speakers to second-guess which word means what.
Origin of Ritz combination principle
after Walther Ritz (1878–1909), Swiss physicist, who formulated it
Also called combination principle.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019