Helio Ricardo Moraes CabralBiblio.com
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réf. B9798843780050Paperback / softback. New. paperback
réf. 6128756496VDM Verlag Dr. Mueller Aktiengesellschaft & Co. KG . Papeback. New. pp. 92 VDM Verlag Dr. Mueller Aktiengesellschaft & Co. KG unknown
2007réf. SKU0469766Routledge 2020-07-15. Paperback. Good. Textbook May Have Highlights Notes and/or Underlining BOOK ONLYNO ACCESS CODE NO CD Ships with Emailed Tracking Routledge paperback
2012réf. DADAX184150632XIntellect Ltd 2012-12-15. paperback. New. 6.00x0.40x9.00. Buy with confidence. Excellent Customer Service & Return policy. Intellect Ltd paperback
2006réf. DADAX0975941119Brand: Black Belt Books 2006-05-01. First Edition. paperback. New. 11.43x8.82x0.95. Buy with confidence. Excellent Customer Service & Return policy. Brand: Black Belt Books paperback
2006réf. SONG0975941119Brand: Black Belt Books 2006-05-01. First Edition. paperback. Used: Good. 11.43x8.82x0.95. Buy with confidence. Excellent Customer Service & Return policy. Brand: Black Belt Books paperback
réf. A9781439878804Hardback. New. hardcover
1992réf. 026691Witte de with Center for Contemporary Art 1992. Book. Very Good. Soft cover. 220mm x 270mm. Covers have light general wear. Spine not creased. Internally clean. Text in English and Dutch. 280pp. Witte de with Center for Contemporary Art Paperback
2007réf. 260210003AMuseum of Fine Arts Houston 2007. Paperback. New. 9x1x11. BRAND NEW. Still Sealed in Publishers Shrinkwrap. Museum of Fine Arts Houston paperback
2006réf. Alibris.0017607Torrance CA: Gracie Publications. 2006. Hard cover. New in new dust jacket. Sewn binding. Paper over boards. With dust jacket. 273 p. Contains: Illustrations. Audience: General/trade. . Gracie Publications hardcover
réf. 21684098-nnew. unknown
2021réf. __0947830804Lisson Gallery 2021. Paperback. New. 96 pages. 11.75x9.25x0.50 inches. Lisson Gallery paperback
réf. 43716658like new. unknown
2010réf. DADAX3639240618VDM Verlag 2010-06-10. paperback. New. 5.91x0.21x8.66. Buy with confidence. Excellent Customer Service & Return policy. VDM Verlag paperback
1869réf. 59086Paris Gauthier-Villars 1869. 4to. In: "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences" Tome 68 No 7. Pp. 349- 408. Entire issue offered. Janssen's paper pp. 367-376. First printing of the paper in which Janssen announced the discovery of a new element. On August 18 1868 Janssen managed to do just that. He became the first person to observe helium an element never before seen on Earth in the solar spectrum. At the time though Janssen didn’t know what he’d seen"just that it was something new""Helium the second most abundant element in the universe was discovered on the sun before it was found on the earth. Pierre-Jules-César Janssen a French astronomer noticed a yellow line in the sun's spectrum while studying a total solar eclipse in 1868. Sir Norman Lockyer an English astronomer realized that this line with a wavelength of 587.49 nanometers could not be produced by any element known at the time. It was hypothesized that a new element on the sun was responsible for this mysterious yellow emission. This unknown element was named helium by Lockyer." unknown
1870réf. 42423London Taylor and Sons 1870. 4to. No wrappers as extracted from "Philosophical Transactions" 1869 Vol. 159 - Part I. Pp. 425-444 and 2 lithographed plates 1 with the spectrum of helium 1 with his spectroscope not requiring eclipses to function. Clean and fine. First appearance of this milestone paper in chemistry physics and astronomy announcing the discovery of helium in the sun and naming it 'helium' for Helios the Greek God of the Sun. In the same paper he demonstrates his invention of the spectroscope by which the prominences of the sun could be observed and studied without an eclipse by leading the light from the very edge of the sun through a prism. - Helium was not discovered on the earth before 1895 by William Ramsay and it was Crookes who established its identity with the helium Lockyer observed in the spectrum of the sun."This the last discovery was announced on the same day by the French astronomer Janssen who was in India observing a total eclipse. As a result the French government some ten years later struck a medallion showing the heads of both scientists.By that time the two men had made a much more dramatic discovery at the same time this time in cooperation. Janssen studying the spectrum ofthe sun during the eclipse had noted a fine line he did not recognize. he send a report on this to Lockyer an acknowledges expert on solar spectra. Lockyer compared the reported position of the line with lines of known elements concluding that it must belong to a yeat unknown element possibly not even existing on the earth. He named the element from the Greek word for the sun."Asimov. unknown
1895réf. 49284London arrison and Sons 1895. - Paris Gauthier-Villars 1895. 8vo. and 4to. Later full cloth gilt lettering to spine Ramsay and without wrappers Cleve. In "Proceedings of the Royal Society" Ramsay Vol. 58. Entire vol. offered. And in "Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences" Cleve Tome 120 No 15. Pp. 797- 850. Entire issue offered. Ramsay's papers: pp. 65-67 and pp. 81-89. - Cleve's paper: p. 834. Stamps tp edges and a few corners a bit bumped on vol. 58 otherwise clean and fine. First printing of both papers in which Ramsay and Cleve - independently - announced their discovery of Helium on the Earth. Although Ramsay announced the discovery of Helium before Cleve had completed his research the Swedish chemist was independent discoverer of the element.Helium was discovered in the sun already in 1868 by Jules Janssen and independently by Lockyer the same year. Janssen discovered helium in the sun when he observed a total eclipse in India by studying the spectra of the suns chromosphere and Lockyer also by spectroscopy found that the new line in the spectrum did not belong to any element then known and he named it Helium for the sun.In the same volume as Ramsays paper there are 5 papers by NORMAN LOCKYER dealing with the discovery of Helium on the earth examining Ramsay's and Cleve's findings.Parkinson "Breakthroughs" 1895. hardcover
1878réf. 44231Paris G. Masson 1878. 8vo. Contemp. hcalf raised bands gilt spine. Light wear along edges. Small stamps on verso of titlepage. In: "Annales de Chimie et de Physique" 4e Series - Tome 15. 512 pp. a. 3 folded engraved plates. The entire volume offered. Janssen's memoir: pp. 414-426. First appearance of this milestone paper in chemistry physics and astronomy announcing the discovery of the helium lines in the spectrum of the sun. It was Lockyer in the same year that named it 'helium' for Helios the Greek God of the Sun. Helium was not discovered on the earth before 1895 by William Ramsay and it was Crookes who established its identity with the helium Janssen and Lockyer observed in the spectrum of the sun."He Janssen met immortality by travelling to India in 1868 to study the total eclipse. It was then that he observed the helium line and forwarded the spectral data to ockyer. He also noted the size of the solar prominences. The day after the eclipse he attempted to take their spectra again and succeeded despite the absence of the obscuring moon. he then announced jubilantly that it was the day after the eclipse that was the real eclipse day for him. Lockyer also reported this method of studying prominences without an eclipse.Like Lockyer he lived to see his observation of the helium line vindicated by Ramsay's discovery of that element on earth."Asimov."This the discovery of helium lines in the sun by Lockyer was announced on the same day by the French astronomer Janssen who was in India observing a total eclipse. As a result the French government some ten years later struck a medallion showing the heads of both scientists.By that time the two men had made a much more dramatic discovery at the same time this time in cooperation. Janssen studying the spectrum ofthe sun during the eclipse had noted a fine line he did not recognize. he send a report on this to Lockyer an acknowledges expert on solar spectra. Lockyer compared the reported position of the line with lines of known elements concluding that it must belong to a yeat unknown element possibly not even existing on the earth. He named the element from the Greek word for the sun."Asimov.Parkinson "Breakthroughs" 1868 A. - The volume contains other notable papers by Dumas Berthelot et al. hardcover
2007réf. DADAX1931229457Invisible Cities Press LLC 2007-01-12. paperback. New. 2.00x15.00x9.00. Buy with confidence. Excellent Customer Service & Return policy. Invisible Cities Press LLC paperback
2013réf. DADAX383836211XLAP Lambert Academic Publishing 2013-02-23. paperback. New. 5.91x0.68x8.66. Buy with confidence. Excellent Customer Service & Return policy. LAP Lambert Academic Publishing paperback
réf. 6555363169.Gpaperback. Good. Access codes and supplements are not guaranteed with used items. May be an ex-library book. paperback
1992réf. 14402Distributed Art Pub Inc 1992. Soft cover. Very Good. General wear though not new I acquired it new in 1995 still gift quality. Corners not completely square upturned covers not fresh but faded from surface wear especially on back ghost shadows in the black background; some shelf wear to edges; interior is as new. 22 x27 cm. 277 pages well illustrated. This exhibit traveled 5 locations around the world for 2 years. Distributed Art Pub Inc paperback
2004réf. SONG0822331861Duke University Press Books 2004-03-12. hardcover. Used: Good. 6.00x1.00x9.50. Buy with confidence. Excellent Customer Service & Return policy. Duke University Press Books hardcover
2019réf. 38214Trackpad Publishing. New No dust jacket as issued. First Edition. Softcover. Brand new shrink wrapped copy. . 2019. Trackpad Publishing paperback
2019réf. 38215Trackpad Publishing. New No dust jacket as issued. First Edition. Softcover. Brand new shrink wrapped copy. . 2019. Trackpad Publishing paperback
