Salpeter E W (4 results)

Condition: New. In.

Paperback. Condition: Very Good. 16 b/w photograhic plates, each with three sections of the spectrum. (illustrator). 1st Edition. stapled blue printed wraps; 8 clean, unmarked pages; with 16 photographic plates (loose); both in a quatro-folded slipcase; lite sunning but very little wear mostly of which is at the seams/hinges of the slipcase; owner's name on slipcase and booklet. a landmark spectral atlas and catalog published by the Vatican Observatory detailing the atomic emission wavelengths (measured in Angströms, of the element thorium. It serves as a highly accurate, universal reference standard for calibrating astronomical spectrographs and laboratory equipment. Because thorium is mono-isotopic and avoids complex hyperfine line splitting, its spectrum produces clean reference points critical for precise astronomical radial velocity and exoplanet searches.

(= Ricerche Spettroscopiche, Vol. 3, Nr. 3). S. 65-162 mit 24 Abbildungen. 4to. (24 cm) OBroschur. Città del Vaticano, Specola Vaticana 1966.

Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. The Fundamental Constants of Atomic Physics.- I. Introduction.- a) General plan.- b) The atomic constants.- c) The need for the method of least squares.- II. History of our knowledge of the atomic constants.- a) Description of important experiments.- b) Pro.