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BESSEL, (FRIEDRICH WILHELM) - THE FIRST MEASURE OF THE DISTANCE TO A STAR AND OF ITS PARALLAXBiblio.com

Observations pour déterminer la parallaxe annuelle de la 61e étoile du Cygne. - Extrait d'une Lettre de M. Bessel à M. de Humboldt. Note de M.Arago sur le même sujet. Séance du Lundi 5 Novembre 1838. Nouvelles observations sur la parallaxe annu.

1838réf. 47114Paris Bachelier 1838 a. 1840. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences" Tome 7 No 19 and Tome 10 No 17/18. Pp. 769- 803 a. pp. 671- 717. Entire issues offered. Bessel's papers: pp. 785-793 a. pp. 703-710. Some scattered brownspots. First appearance of a milestone paper in astronomy giving the solution of the great problem of distances in the universe which had baffled astronomers ever since the time of Copernicus announcing the FIRST SUCCESSFUL DISPLACEMENT OR PARALLAX OF A FIXED STAR and hence deducing the FIRST RELIABLE DISTANCE OF THE EARTH TO A FIXED STAR. The parallax observed corresponded to ab. 600.000 times that of the earth from the sun. On these grounds Bessel calculated the distance to about 11 light years and this was confirmed by fresh investigations by Bessel in 1839-40 the second paper offered. In 1842-43 it was also confirmed by C.A.F. Peters at Pulkowa. It is the first published instance of the fathom-line thrown into celestial space.Bessel communicated his observations in Comptes Rendus in a letter to Humboldt the offered paper dated Nov. 5 1838 in "Monthly Notices" in letter to J. Herschel and in "Astronomische Nachrichten" Vol. 16 No 365-66 pp. 65-96 1838 where a more detail account was published.Ther paper "Bestimmung der Entfernung des 61sten Stern des Schwans" in "Astronomische Nachrichten" is dated at the end: Altona 1838 Dec. 13.Bessel's investigation was hailed by John Herschel when Bessel was awarded the R.A.S. gold medal "The greatest and most glorious triumph which practical astronomy has ever witnessed". "For determining the parallax of 61 Cygni Bessel selected two comparison stars of magnitude 9-10 at distances of roughly eight and twelve minutes of arc. 61 Cygni is a physical double star whose components differ in brightness by less than one magnitude. The distance of sixteen seconds of arc between the components favored the accuracy of the determination of the parallax because pointing could be carried out with two star images. After observing for eighteen months by the fall of 1838 Bessel had enough measurements for the determination of a reliable parallax. He found that p = 0.314 with a mean error of ±:0.020. This work was published in the Astronomische Nachrichten 1838 the first time the distance of a star became known. Bessel’s value for the parallax shows excellent agreement with the results obtained by extensive modern photographical parallax determinations." DSB.Parkinson "Breakthroughs" 1838 A. - Shapley & Howarth "A Source Book in Astronomy" pp. 216 ff. unknown

Herman H. J. Lynge & Søn A/S · Danemark11 500,00 DKK≈ 1 538,50 €

BESSEL, (FRIEDRICH WILHELM) - THE FIRST MEASURE OF THE DISTANCE TO A STARBiblio.com

Observations pour déterminer la parallaxe annuelle de la 61e étoile du Cygne. - Extrait d'une Lettre de M. Bessel à M. de Humboldt. Note de M.Arago sur le même sujet. Séance du Lundi 5 Novembre 1838. Nouvelles observations sur la parallaxe annu.

1838réf. 49473Paris Bachelier 1838 a. 1840. 4to. No wrappers. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences" Tome 7 No 19 and Tome 10 No 17/18. With title-ages to vol. 7 and 10. Pp. 769- 803 a. pp. 671- 717. Entire issues offered. Bessel's papers: pp. 785-793 a. pp. 703-710. Stamp on both titlepages. The second titlepage with a fes brownspots otherwise clean and fine. First appearance of a milestone paper in astronomy giving the solution of the great problem of distances in the universe which had baffled astronomers ever since the time of Copernicus announcing the FIRST SUCCESSFUL DISPLACEMENT OR PARALLAX OF A FIXED STAR and hence deducing the FIRST RELIABLE DISTANCE OF THE EARTH TO A FIXED STAR. The parallax observed corresponded to ab. 600.000 times that of the earth from the sun. On these grounds Bessel calculated the distance to about 11 light years and this was confirmed by fresh investigations by Bessel in 1839-40 the second paper offered. In 1842-43 it was also confirmed by C.A.F. Peters at Pulkowa. It is the first published instance of the fathom-line thrown into celestial space.Bessel communicated his observations in Comptes Rendus in a letter to Humboldt the offered paper dated Nov. 5 1838 in "Monthly Notices" in letter to J. Herschel and in "Astronomische Nachrichten" Vol. 16 No 365-66 pp. 65-96 1838 where a more detail account was published.Ther paper "Bestimmung der Entfernung des 61sten Stern des Schwans" in "Astronomische Nachrichten" is dated at the end: Altona 1838 Dec. 13.Bessel's investigation was hailed by John Herschel when Bessel was awarded the R.A.S. gold medal "The greatest and most glorious triumph which practical astronomy has ever witnessed". "For determining the parallax of 61 Cygni Bessel selected two comparison stars of magnitude 9-10 at distances of roughly eight and twelve minutes of arc. 61 Cygni is a physical double star whose components differ in brightness by less than one magnitude. The distance of sixteen seconds of arc between the components favored the accuracy of the determination of the parallax because pointing could be carried out with two star images. After observing for eighteen months by the fall of 1838 Bessel had enough measurements for the determination of a reliable parallax. He found that p = 0.314 with a mean error of ±:0.020. This work was published in the Astronomische Nachrichten 1838 the first time the distance of a star became known. Bessel’s value for the parallax shows excellent agreement with the results obtained by extensive modern photographical parallax determinations." DSB.Parkinson "Breakthroughs" 1838 A. - Shapley & Howarth "A Source Book in Astronomy" pp. 216 ff. unknown

Herman H. J. Lynge & Søn A/S · Danemark15 000,00 DKK≈ 2 006,75 €

Best & Hillyer; Madge Mahan; Val Teal; Elva Williams; Rachel MacKenzie; Lorna Slocombe; Evelyn Eaton; Alice G. Craft; Fredda D. Balling; Virginia Patterson; Emerson StarrMareMagnum

Good Housekeeping - The Magazine American Lives By, March (Mar.) 1951 - Crescent City, California

1951318 pages. Features: Town of the Month - Crescent City, California; Woodbury ad features wedding photos of Pat Burrage and Bob Young; Lovely color Camay ad features Mrs. Jules Alexander, the former Jean Pugsley of Rochester, NY; Color Fig Newtons ad; Assignment in Hollywood; Kidney Infection; Nice photo ad for Warner's foundations and bras; Great two-page color ad for Kelvinator ranges; Nice color Prell ad features photo of redhead; Canada tourism ad; Lux color ad features Linda Darnell; Lovely Ivory Soap color ad features Sue Jenks; Tomorrow and Tomorrow - story by Val Teal; The New Laws of Canasta; The Big Dream - story by Elva Williams; Pattern - story by Rachel MacKenzie; The case for Privacy; A New Boss Every Hour; Revenge - story by Alice G. Craft; The Meeker Sex; My Mother-In-Law Stayed Four Years; Gorgeous color and black and white fashion photos; Lovely photos of children in Easter fashions; Curious George comic in Zozo ad; Color Tide ad mentions Mrs. Jean Riche of Dallas, Texas; Why children quite taking lessons; Photo of Mrs. David Anthony Drexel in Pond's ad; Gloria Swanson photo in Jergens ad; Little Lulu in Kleenex ad; Colour Duz detergent ad; Color ad for the (green) 1951 Chevrolet; Color Avon ad features Mrs. Gary Cooper with her rep., Mrs. Billie Sussman; Satina ad features photo of Mrs. David Johnson of Studio City, California; Photos of Ginger Rogers in Jergens ad; Star-Kist ad features photo of Dan Dailey, star of movie "Call Me Mister"; Color Raytheon TV ad; Nice color ad for 1951 Dodge cars features Betty Hutton; Color ad for film "September Affair"; Many nice fashion ads; and much, much more. Average wear. A worthy vintage copy of this charming issue. Magazine

RareNonFiction.com · Canada149,95 €

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