Hartree douglas (16 Ergebnisse)

Zustand: New. pp. 152.

Hardcover. Zustand: Fine. Leichte Kratzer / Abnutzungen / Druckstellen; Leichte Verschmutzung / Farbtonveränderung. A theoretical physicist at Cambridge, Douglas Hartree is best known for his work in numerical methods and the machines that could be used to calculate them with increasing speed and sophistication.This reprint of Hartree's principal work also includes his inaugural Cambridge lecture, Calculating Recent and Prospective Developments and Their Impact on Mathematical Physics , which is extremely difficult to obtain and which makes ideal preliminary reading for the main set of lectures presented in Calculating Instruments and Machines . In these, Hartree provided the first comprehensive survey of the significant developments in computation that were going on at the time-the main directions of development in storage systems, serial machines, and parallel programming and coding, and particularly with high-speed automatic digital machines that were precursors of the modern stored program computer.Calculating Instruments and Machines was originally published in 1949 by the University of Illinois Press. It is Volume VI in The Babbage Institute Reprint Series.…

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.

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).

Soft cover. Zustand: Near Fine. 1st Edition. Pamphlet in self-wraps, as issued, 216 x 139mm; pp. 1-[30]. EXCEPTIONALLY SCARCE SEPARATE PRINTING OF HARTREE'S IMPORTANT LECTURE ON THE DIFFERENTIAL ANALYZER Hartree's comprehensive lecture on the 'differential analyser' with photographs of the Manchester analyser, and Hartree's pioneering Meccano model. The Differential Analyser was invented by Vannevar Bush, and first described in print 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. Near fine condition: staples slightly rusty, otherwise in exceptional condition. Just a single copy located on OCLC, at the University of Waterloo Libraries. Not in Origins of Cyberspace.…

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. …

First UK edition of 'the first comprehensive exposition of electronic digital computing', originally published the previous year in the US. In addition to his significant contributions to ballistics and quantum theory, British mathematician Douglas Hartree (1897-1958) was a leader in efforts to automate scientific calculations. He was 'involved in the development of the digital electronic computer, which emerged from wartime attempts to automate calculation further. In 1946 Hartree's advice was sought in the application of the United States army's ENIAC (electronic numerical integrator and computer) to the production of ballistic tables' (Oxford Dictionary of National Biography). The present volume is 'based upon a series of lectures delivered at the University of Illinois in 1948. 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 Berkley's Giant Brains or Machines That Think was written for a more popular audience and achieved greater sales. Reflecting Hartree's English background, this book contained more information on the English machines than did Berkley's. Foremost among the digital machines discussed in Hartree's work are the Harvard Mark I and ENIAC. 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' (Hook & Norman, Origins of Cyberspace 652). First UK edition, first impression; tall 4to; diagrams and monochrome illustrations from photographs throughout the text, neat contemporary ownership inscription to the front free endpaper, contents toned; original burgundy cloth, titles to spine gilt, spine rolled, cloth rubbed and marked, corners bumped, very good condition; 138pp. Hook & Norman, Origins of Cyberspace 652.…

Hardcover. Zustand: Very Good. 1st Edition. 8vo; pp. xiii, 528; Hartree pp. 342-364 [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 described in print 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: not ex-library; spine with a 5mm split at the top, otherwise very good; internally clean and unmarked throughout; barely noticeable foxing to a handful of page edges, not affecting the Hartree essay. References: not in Origins of Cyberspace, but see no 317.…

The uncommon offprint of this overview of the history and design of calculating machines, including Babbage's Analytical Engine, the Harvard Mark I, and EDSAC. Not in Hook and Norman's Origins of Cyberspace. In addition to his significant contributions to ballistics and quantum theory, British mathematician Douglas Hartree (1897-1958) was a leader in efforts to automate scientific calculations. He was 'involved in the development of the digital electronic computer, which emerged from wartime attempts to automate calculation further. In 1946 Hartree's advice was sought in the application of the United States army's ENIAC (electronic numerical integrator and computer) to the production of ballistic tables' (Oxford Dictionary of National Biography). 10-page offprint, 2 double-sided plates from photographs, diagrams within the text, a little mild creasing to contents; original green wrappers printed in black, wrappers a little toned at the edges and lightly rubbed with a few small marks, excellent condition.…

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.…

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. .…