Salpeter e w edwin walter (1 risultati)
- Altre immagini
Lingua: Inglese
Editore: Vatican Observatory (Specola Vaticana), Vatican City, Italy, 1964
- Brossura
- Prima edizione
Da: Dorley House Books, Inc., Hagerstown, MD, U.S.A.Dorley House Books, Inc.
Contatta il venditoreVenditore con 4 stelleCondizione: Usato - Molto buono
EUR 362,39
EUR 7,61 spedizioneSpedito in U.S.A.Quantità: 1 disponibili
Aggiungi al carrelloPaperback. Condizione: Very Good. 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 c…atalog 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. 16 b/w photograhic plates, each with three sections of the spectrum. (illustratore).
