Frederick h seares (9 Ergebnisse)

Paperback. Zustand: Very Good. Book.

4°, half cloth binding. 1st ed. 89 p. Shelfmark on spine, stamp on preliminary page and title, otherwise fine copy. Sprache: Englisch Gewicht in Gramm: 0.

8vo. 27 pp. Figs. Printed wrappers. FINE. WITH: "Relation of Color to Intrinsic Luminosity in Stars of the Same Spectral Type." Offprint from: Proc. Nat. Acad. Sci., vol. 5, 1919. 8vo. 232-238 pp. Original printed wrappers. Bookplate of Herbert Mclean Evans.

Zustand: BUONO USATO. Laws observatory university of Missouri INGLESE Bulletin n.5 della collana, brossura editoriale flessibile, parzialmente ingiallita, con timbro vecchia biblioteca regolarmente acquisita al piatto anteriore, qualche piccola macchia e strappetti ai bordi, pagine leggermente e naturalmente ingiallite, leggera fioritura alle prime ed ultime carte. Numero pagine 84.…

Halbleinen. Zustand: Gut. 24cm 602 Seiten. Halbleinen. Sprache: Englisch, Zustand: Gut gering gebräunt (Innen); Besitzerstempel; Einband Außen hat geringe bis leichte Gebrauchsspuren; Ist etwas bestoßen-berieben im Deckel; Archivex. mit Klebestreifenrest (Außen); Plate IX. is missing or it is the picture of Hale; Plate XII. ist gering beschädigt; * Die Photos sind original von uns erstellt worden, u.a. erkennbar an einem kleinen weißen Stück Papier im oberen Schnitt. Ab und an verwenden Suchmaschinen Verlagsphotos, bei den Portalen selbst, werden aber nur unsere Originalphotos gezeigt.…

Halbleinen. Zustand: Gut. 24cm 492; 443. Halbleinen. Sprache: Englisch, Zustand: Gut gering gebräunt (Innen); Besitzerstempel; Einband Außen hat geringe bis leichte Gebrauchsspuren; Ist etwas bestoßen-berieben im Deckel; Archivex. mit Klebestreifenrest (Außen); Plate II. (81) gering beschädigt; Plate II. (82) gering bis leicht beschädigt; Plate V. (82) leicht beschädigt; Plate VIII. (82) gering beschädigt; Plate XIII. (82) fehlt; Plate XVI.+XVII: (82) mind. leicht beschädigt; * Die Photos sind original von uns erstellt worden, u.a. erkennbar an einem kleinen weißen Stück Papier im oberen Schnitt. Ab und an verwenden Suchmaschinen Verlagsphotos, bei den Portalen selbst, werden aber nur unsere Originalphotos gezeigt. …

pamphlet. Zustand: very good(+). 84pp. Large 4to, original gray printed wrappers; unopened. Columbia, Missouri: Stephens, 1905. Very good (+). Laws Observatory, University of Missouri, Bulletin No. 5. Seares' "principal contribution lay in the field of photographic photometry: he standardized the stellar magnitude system and extended it to include stars fainter than the eighteenth magnitude," DSB XII, p. 265.…

8vo. (228 x 151 mm). 35 pp. Figs., tables. Original wrappers. Very good. (2) Offprint from: The Observatory, Vol. xliii, No. 556, September 1920, pp. (310)-322. 8vo. (213 x 140 mm). 13 pp. Figs. Original wrappers. Very good. (3) [with:] RUSSELL, Henry Norris (1877-1957). "On the Calculation of Masses from Spectroscopic Parallaxes. Contributions from the Mount Wilson Observatory, No. 227." Offprint from: Astrophysical Journal, Vol. LV, 1922. 8vo. (252 x 170 mm). 73; 4 pp. Figs., tables. Original wrappers. Very good. Three papers from important American astronomer Frederick Hanley Seares, with an additional paper by Henry Norris Russell. "An early research interest for Seares, which would stay with him throughout his career, was astronomical photometry. With Seares's international experience he began an involvement with the Dutch astronomer Jacobus Kapteyn, and his statistical efforts to determine the shape and size of the galaxy (then widely thought to constitute the whole Universe) by using detailed studies of 252 "Selected Areas" of the sky. Sears's interest was in establishing photographic-photometric standards that would provide accurate magnitude estimates for the stars in the Selected Areas. He would play a major role in establishing the magnitudes of the stars in Selected Areas 1-139. In participating in this effort, Seares would work with a number of the world's leading astronomers and lead the primary effort for constantly refined accuracy in this work." [see Hockey, Biographical Encyclopedia of Astronomers, Vol. 2, p. 1038].…

Hardcover. Zustand: Good. Good condition with minimal wear and marking.