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Ritz combination principle

[rits] /rɪts/
noun, Physics.
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.
Also called combination principle.
Origin of Ritz combination principle
after Walther Ritz (1878-1909), Swiss physicist, who formulated it Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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