Salpeter e w edwin walter (1 Ergebnisse)
Weitere BilderSprache: Englisch
Verlag: Vatican Observatory (Specola Vaticana), Vatican City, Italy, 1964
- Softcover
- Erstausgabe
Anbieter: Dorley House Books, Inc., Hagerstown, MD, USADorley House Books, Inc.
Verkäufer/-in kontaktierenVerkäufer/-in mit 4 SternenZustand: Gebraucht - Gut
EUR 353,10
EUR 7,41 VersandVersand innerhalb von USAAnzahl: 1 verfügbar
In den WarenkorbPaperback. Zustand: 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 cata…log 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. (illustrator).
