HARTREE, DOUGLAS (22 Ergebnisse)

Zustand: New. pp. 152.

Hardcover. Zustand: Good. xiv 287p navy hardback, somewhat scuffed and faded boards, spine with old library marks, from a Cambridge college library, text clean with odd light pencil marks, binding still tight, hinges a bit rubbed Language: English.

Hardcover. Zustand: Good. xiv 287p original cloth worn with age and use, with the chapter on Organisation of Calculations for an Automatic Machine, from a Cambridge college library with signs of wear Language: English.

Paperback. Zustand: Brand New. reissue edition. 138 pages. 9.50x6.75x0.50 inches. In Stock.

Paperback. Zustand: Brand New. 154 pages. 8.98x5.98x0.71 inches. In Stock.

Clarendon Press, Oxford 1955. Second printing. xiv, 287 pp. Publisher's cloth. Bookplate. Fine condition.

Zustand: Akzeptabel. Formateinband: Leinen / gebundene Ausgabe XVI, 302 S. (24,5 cm) Reprint of the 2nd edition; Exemplar aus Institutsbibliothek mit Standortschild am Rücken, Stempel u. kl. Barcodeklebern, mit Klarsichtfolie überzogen; sonst in gutem Zustand. Sprache: Englisch Gewicht in Gramm: 950 [Stichwörter: Numerische Analysis].

Hardcover. Zustand: Very Good. xiv 287p cloth, dustjacket (small tear), with an important chapter on Organisation of Calculations for an Automatic Machine, this copy was formerly owned by Prof Cassells of Cambridge Language: English.

Hardcover. Zustand: Good. It's a preowned item in good condition and includes all the pages. It may have some general signs of wear and tear, such as markings, highlighting, slight damage to the cover, minimal wear to the binding, etc., but they will not affect the overall reading experience.

IX, 138 pp. with a lot of illusrations, Sprache: Englisch Gewicht in Gramm: 510 Groß 8°, Original-Leinen (Hardcover), Bibliotheks-Exemplar (ordnungsgemäß entwidmet), Stempel auf Titel, insgesamt gutes und innen sauberes Exemplar, (library copy in good condition),

Zustand: Fair. Manchester 1933 first edition. Memoirs and Proceedings of Manchester Literary & Philosophical Society 1932-33. Original pale blue printed wraps. octavo. Hartree articles on pp. 69-90 and 91-107. Hartree's work in numberical analysis contributed to development of calculators and computers. Cover Fair, creased and worn with light chipping; text near Fine, clean and bright. Institute stamp on cover. no other ownership marks.

Hardcover. Zustand: Very Good. Zustand des Schutzumschlags: Good. First Edition. Very good hardback copy in slightly shelfworn dustjacket. ix, 138pp., b/w illustrations Size: 9.75" x 6.5" (25x17cms). Book.

254 x 181 mm. Tall 8vo. Pages 550-558. [Entire volume: viii, 645, [2] pp.] 4 tables. Quarter navy morocco, morocco corners, raised bands, gilt spine; spine lightly faded. Blind stamp of the Carnegie Institution of Washington, Mount Wilson Observatory. Fine. "Hartree and his collaborators evaluated wave functions for more than twenty-five different atomic species in various states of ionization. Through his stimulus and encouragement many more atoms were investigated by physicists throughout the world. Hartree's equations as generalized by V. Fock proved to be extremely valuable in theoretical calculations in sold state physics." DSB, VI, p. 147.

Hardcover. Zustand: very good. First Edition. This book was based on a short series of lectures given by the author at the University of Illinois in 1948. Intended as a general introduction illustrated by Hartree's personal experiences working with ENIAC and the Harvard Mark I, a pioneering work with calculating instruments and machines. Author's first book. Douglas Rayner Hartree FRS was an English mathematician and physicist most famous for the development of numerical analysis and its application to the Hartree Fock equations of atomic physics and the construction of a differential analyzer using Meccano. Boards with light edge-wear. First Edition. 7" - 10". Book.

8vo. xiv, 287 pp. 31 figs., bibliog., index. Navy cloth, gilt spine, dust-jacket. Ownership rubber stamps of Robert L. White. Fine. FIRST EDITION. "Calculation originally, and over a long period, meant numerical calculation â" the repertoire of arithmetical operations such as addition, subtraction, multiplication and division, and procedures such as extraction of square roots, which could be applied to arbitrary numbers: integers, fractions, and rational, irrational and transcendental numbers. Subsequent developments of such procedures into powerful methods for the solution of general mathematical problems in numerical terms came to known, in English, as numerical analysis." Ifrah, The universal history of computing, p. 69. DSB, VI, p. 148.

Hardcover. Zustand: Very Good. 1st Edition. 8vo; pp. xiii, 528; Hartree pp. 342364 [whole volume offered]. A MECCANO DIFFERENTIAL ANALYZER. Hartree's important account of the 'differential analyser' with photographs of the manchester analyser, and Hartree's pioneering Meccano model. The most comprehensive of the early essays on the differential analyser, with diagrams and photographs illustrating the design, accounts of the use and applications of the machine, and a useful bibliography. The Differential Analyser was invented by Vannevar Bush, and first published in 1931; Bush's invention was the culmination of a line in computer design that goes back to the work of James and William Thomson (Lord Kelvin), most famously the latter's tide-predicting machine. The Differential Analyser was hugely successful, circulating around the world via the unconventional medium of the children's construction-set Meccano. Very good condition in green cloth; clean and unmarked throughout, noting only very faint and very occasional foxing, barely affecting the Hartree essay.

Hardcover. Zustand: Fine in Near Fine DJ. First Edition. First Edition. Hardcover. "The first comprehensive exposition of electronic digital computing." [OOC 652] "These lectures were intended for a well-informed scientific audience outside the tiny group of professionals then involved with electronic computing. They represented the first comprehensive exposition of electronic digital computing, and this book was one of the first two treatises on the subject. The other book, Edmund Berkeley's Giant Brains or Machines That Think was written for a more popular audience and achieved greater sales. . . . Chapter 8, entitled 'Projects and prospects,' contains the first generally available comprehensive account of the stored-program machines then in development, including EDVAC, ACE, and EDSAC." [OOC 652]. Minimal shelf/edge wear, else tight, bright, and unmarred; DJ shows minor shelf/edge wear, one small closed tear, else bright and clean. Orange cloth boards, black ink lettering. 8vo. 138pp. Illus. (b/w plates).

Hardcover. Zustand: very good. first edition. First printing of this critical work in the history of computing and a foundational text that launched a circulation through an international scientific journal. In "Nature", Vol 158. October - December, 1946. Entire volume offred with ENIAC [Electronic Numerical Integrator And Computer] article Pp. 500-506. [Entire volume: Pp. 459-956]. Hartree, a British mathematician, first learned of ENIAC in 1945, when he saw the as-yetuncompleted machine during a visit to the Moore School at the University of Pennsylvania. It was here that this first general-purpose Turing complete digital electronic computer, was built between 1943 and 1946. The first computer course was given at the Moore School in Summer 1946, leading to an explosion in computer development all over the world. Hartree was a participant in the lectures, advising on nonmilitary uses of the ENIAC while being the first Englishman to work with the machine. Later, Hartree helped stimulate the development of more powerful computers like Cambridge University's EDSAC. The ENIAC was 10 feet high, and 3 deepand contained 18,000 vacuum tubes, about 70,000 resistors, 10,000 capacitors, and 6,000 switches. It consumed 140 kilowatts, so much power that when operated the lights in a nearbytown dimmed. Royal 8vo bound in contemporary cloth. Provenance: Bookplates stamps on front free end-papers of the University of Oxford. Near fine and clean. 7½" - 10". book.

(29,5 x 21 cm). 12 S. Mit 8 Abbildungen. Original-Broschur. (Sonderdruck aus: Zeitschr. für angew. Mathematik und Mechanik). Erste Ausgabe eines Vortrags für die Jahrestagung der Gesellschaft für angewandte Mathematik und Mechanik in Darmstadt. - Es werden u.a. die Rechner Mark I, Eniac und EDSAC beschrieben. - Wohlerhalten. - DSB 6, 147.

Large 8vo, pp. lii, 956. Black buckram, spine lettered in gilt, library bookplate. The whole volume is offered, of which Hartree?s paper occupies pp. 500?506, with 3 photographic illustrations. FIRST EDITION. ?The first paper on an electronic digital computer published in a large-circulation international scientific journal.? Hartree, a British mathematician, first learned of ENIAC in 1945, and the following year became the first Englishman to work with the machine. ?He was the first to bring news of ENIAC to Great Britain, publishing the above article in Nature shortly after his return from the United States.? Hook & Norman, Origins of cyberspace, 648.

London, Macmillan & Co., 1946. 8vo. Without wrappers. Extracted from "Nature. No. 4015, Saturday, October 12, 1946, Vol. 158". A fine and clean copy. [Hartree:] Pp. 500-6. [Entire offered issue: Pp. 495-528]. First printing of this "first paper on an electronic digital computer published in a large-circulation international scientific journal." (OOC).The ENIAC was the first general-purpose electronic computer. It was a Turing-complete [computationally universal] digital computer capable of being reprogrammed to solve a full range of computing problems."Hartree, a British mathematician, first learned of ENIAC [Electronic Numerical Integrator And Computer] in 1945, when he saw the as-yet uncompleted machine during a visit to the Moore School. In 1946 he returned to the Moore School as a participant in the Moore School lectures, advising on nonmilitary uses of ENIAC" during this time he became the first Englishman to work with the machine. He was the first to bring news of ENIAC to Great Britain, publishing the above article in Nature shourtly after his return from the United States. Although he himself invented no new calculating devices, Hartree's promotion of electronic digital calculating methods in scientific computation helped to stimulate the development of more powerful computers like Cambridge University's EDSAC." (OOC).The ENIAC was compared to today's standard rather large: It was 100 feet long, 10 feet high, and 3 deep and contained 18,000 vacuum tubes, about 70,000 resistors, 10,000 capacitors, and 6,000 switches. It consumed 140 kilowatts of power, so much power that, when operated, the lights in a nearby town dimmed.See: Hook & Norman. Origins of Cyberspace 648.

Hartree, Douglas R. (1897-1958). The ENIAC, an electronic computing machine. In Nature 158 (October 1946): 500-506. 8vo extract of 495-528pp. Text illustrations. 250 x 170 mm. Disbound. Corner torn from last leaf of number, affecting text, spine splitting. Very good copy. First Edition. The first paper on an electronic digital computer published in a large-circulation international scientific journal. The ENIAC, developed during World War II by Pres Eckert and John Mauchly at the University of Pennsylvania's Moore School of Engineering, was the world's first large-scale general purpose digital computer. Hartree, a British mathematician, first learned of ENIAC in 1945, when he saw the as-yet uncompleted machine during a visit to the Moore School. In 1946 he returned to the Moore School as a participant in the Moore School lectures, advising on nonmilitary uses of ENIAC; during this time he became the first Englishman to work with the machine. He was the first to bring news of ENIAC to Great Britain, publishing the above article in Nature shortly after his return from the United States. Although he himself invented no new calculating devices, Hartree's promotion of electronic digital calculating methods in scientific computation helped to stimulate the development of more powerful computers like Cambridge University's EDSAC. Origins of Cyberspace 648. Randell 1982a, 473. .