THE CORRESPONDENCE PRINCIPLE: “Über die Serienspektra der Elemente” (Zeitschrift für Physik: Volume 2, pp. 423-469)

Braunschweig, Germany: Friedr. Vieweg & Son, 1920. First Edition. Hardcover. Very Good. Niels Bohr (1884-1962) first gives a name to the correspondence principle (“Korrespondenzprincip”) in a presentation to the Berlin Physical Society in 1920. The correspondence principle "says that for large orbits and for large energies, quantum calculations must agree with classical calculations." (https://en.wikipedia.org/wiki/Correspondence_principle)

Also contains Otto Stern's article, “Eine direkte messung der thermischen molekulargeshwinidigkeit” (“Direct measurement for the thermal molecular velocity”) on pp. 49-56. iv, 478 pp. 8vo. Gray cloth (truncated) spine with gray patterned cloth covers. Some scuffing overall with a clean interior. Previous owner's name in ink on first free endpaper. (Inventory #: 29119)