Ritz combination principle
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. Principle
Is 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. Today, we’ll discuss the distinct meanings between these easy-to-confuse terms and a little trick to help differentiate between your principals and your principles. What is a principal? A principal is “a chief or head, …
Lexical Investigations: Synergy
Though synergy appears in English texts in a general sense as far back as the seventeenth century, it was not widely adopted as a medical term until the mid-nineteenth century. In medical texts from this time, it often appears in italics as a foreign word. In a revealing passage from 1827, the physician W.P. Allison wrote, “I would object to the term synergy, which some …
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