41. BookFinder.com: Douglas Rayner Hartree: His Life In Science And Computing douglas Rayner hartree His Life in Science and Computing. by Charlotte FroeseFischer. Title douglas Rayner hartree His Life in Science and Computing. http://www.bookfinder.com/dir/i/Douglas_Rayner_Hartree-His_Life_in_Science_and_C

Search About Interact Help Douglas Rayner Hartree: His Life in Science and Computing by Charlotte Froese Fischer ISBN: Title: Douglas Rayner Hartree: His Life in Science and Computing Author: Charlotte Froese Fischer Publisher: World Scientific Publishing Company, Incorporated Country: Singapore Edition: Hardcover Found a mistake in this data? Conditions of use Search About ... Contact us...

42. Hartree Energy hartree energy. The hartree energy (symbol E h ) is a physical constantused as atomic unit of energy, named after physicist douglas hartree. http://www.fact-index.com/h/ha/hartree_energy.html

Main Page See live article Alphabetical index Hartree energy The Hartree energy (symbol E h ) is a physical constant used as atomic unit of energy, named after physicist Douglas Hartree. It has a value of twice the absolute value of binding energy of the electron in the ground state of the hydrogen atom W ionization energy J eV where: is the Dirac's constant is the electron rest mass is the Bohr radius This article is from Wikipedia . All text is available under the terms of the GNU Free Documentation License

43. Index/Contents Of : Early Ideas In The History Of Quantum Chemistry. Described (independently of Roothaan) the foundations of the SCF LCAOMO theory.hartree, douglas Rayner, 1897-1958, - -. 30 KByte. At times the St. http://www.quantum-chemistry-history.com/Ueberb1.htm

The survey of this website How to find something Contents Quantum Theory Founders QC Theoreticians More QC Theoreticians Early (Heavy) Users Please note: Some texts are presently still in German, but - more Some QC and Similar Links QC people, alphabetically of this website and elsewhere Quantum Theory Founders Bohr, Niels H. D. Links to the Nobel e-Museum biography 30 KByte Model of the electrons around an atom. Dirac, Paul Adrian Maurice Links to the Nobel e-Museum biography 40 KByte Links to another extended Dirac biography. st generation, eminent pure theoretician: ".. we now can calculate all of chemistry .." Fourier, Jean-Joseph Biography, in German 50 KByte Fourier Method - sin, cos and all that. Hamilton, Sir William Rowland Links to a good biography 100 KByte "Hamiltonian" (operator).

44. Quantum Chemistry People - Alphabetical Listing - Component Of : Early Ideas In Hall, George G. (Nottingham), checked, Hamilton, Sir WR †, checked. hartree,douglas R. †, checked. Heisenberg, Werner Karl †, checked Nobel Bio. http://www.quantum-chemistry-history.com/Alph_Dat/Main2.htm

Alphabetical Listing of Interesting Names in Quantum Chemistry This page enters into a listing of interesting names in Quantum Chemistry on this web site and elsewhere Choose at left A Last link check : May 9, 2003 Last update : May 9, 2003 Name - Location on this site - click linking elsewhere - click sometimes off-net? Ahlrichs , Karlsruhe, Germany yes B Last link check : May 9, 2003 Last update : May 9, 2003 Name - Location on this site - click linking elsewhere - click Ballhausen, Carl J. (Copenhagen) Berthier, Gaston (Paris) C Last link check : May 9, 2003 Last update : May 9, 2003 Name - Location on this site - click linking elsewhere - click Craig, David P., (Canberra, Austr.) D Last link check : May 9, 2003 Last update : May 9, 2003 Name - Location on this site - click linking elsewhere - click Dahl, Jens Peder (Copenhagen)

45. Doug Coward's Analog Computer Museum of Naval Weapons United States Navy 1960 Mechanical fire control computer componentsCalculating Instruments and Machines hartree,douglas R. Cambridge at the http://dcoward.best.vwh.net/analog/readlist.htm

Radio Electronics January 1959 "Computers Speed Aircraft Design" featuring the Heath Analog Computer. Analog computer are used to simulate real world systems. Aircraft design was one of the early wide spread uses. During the 40's, 50's and 60's electronic analog computers were used to simulate the characteristics of a new aircraft, missle, or rocket designs. Because of their true parallel computing nature, speed, small size, and ease of programming, they beat digitial computers hands down in these kinds of tasks. In the mid 60's a new class of computer took over these jobs, the hybrid (combination analog / digital) computer. Suggested reading about analog computers This is the best book I have seen for someone new to analog computers Basics of Analog Computers Truitt,T.D. and Rogers,A.E. John F. Rider Publisher Inc. 1960 Other books about analog computers in our library A Palimpsest on the Electronic Analog Art Paynter,H.M. George A. Philbrick Researches,Inc. 1955 "Collection of reprints of papers and other writings" about analog computers from the early 1950's. Abacs or Nomograms Giet,A Philosophical Library Inc. 1956

46. El Método De Hartree Translate this page En un trabajo pionero, douglas R. hartree sugirió que la ecuación de Schrödingerpodria ser resolvida apropiada y aproximadamente de la manera sugerida http://www.chemkeys.com/esp/md/tdqc_3/metlca_1/emdh_3/emdh_3.htm

Una vez realizada la separación de los movimientos nucleares de los electrónicos, se harán en este capítulo consideraciones solamente sobre la solución de la ecuación de Schrödinger para la componente electrónica, es decir, la solución de la ecuación 11. Puede imaginarse que si la ecuación de Schrödinger puede resolverse exactamente para sistemas monoelectrónicos, el problema de la solución exacta para sistemas multielectrónicos está asociado al término de la repulsión inter-electrónica (ecuación 6.). Realmente, si el término de repulsión electrónica pudiera subdividirse en términos de sus componentes monoelectrónicas, la solución de la ecuación de Schrödinger para un sistema conteniendo n electrones seria dado por una serie de ecuaciones similares a la ecuación 11, siendo una ecuación para cada electrón. En otras palabras, se tendria un conjunto de n ecuaciones del tipo: Ec. (12)

47. O Método De Hartree Translate this page Em um trabalho pioneiro, douglas R. hartree sugeriu que a equação de Schrödingerpoderia ser resolvida adequada e aproximadamente da maneira sugerida acima. http://www.chemkeys.com/bra/md/tdqq_4/metlca_1/omdh_3/omdh_3.htm

Uma vez realizada a separação dos movimentos nucleares dos eletrônicos, serão feitas neste capítulo considerações apenas sobre a solução da equação de Schrödinger para a componente eletrônica, ou seja, a solução da eq.11. Pode-se imaginar que se a equação de Schrödinger pode ser resolvida exatamente para sistemas monoeletrônicos, o problema da solução exata para sistemas multieletrônicos está associado ao termo de repulsão intereletrônica (eq.6). Na verdade, se o termo de repulsão eletrônica pudesse ser subdividido em termos de componentes monoeletrônicas, a solução da equação de Schrödinger para um sistema contendo 2 n elétrons seria dada por uma série de equações semelhantes à eq.11, sendo uma equação para cada elétron. Em outras palavras, ter-se-ia um conjunto de 2 n equações do tipo: Equação (12) sendo o operador de energia cinética do i -ésimo elétron, o termo de atração de todos os N núcleos pelo i -ésimo elétron e corresponderia a um operador de repulsão eletrônica efetivo também do i -ésimo elétron. As funções

48. Technical Units Named After People gilbert, , William Gilbert, electromotive force, 10/4p A·turns. gray, Gy, LH Gray,radiation dose, J/kg. hartree, -, douglas Rayner hartree, energy, approximately 27.21eV. http://www.geocities.com/maineiac_bibliophage/people.html

unit symbol person quantity measured value ampere A André-Marie Ampère electric current C/s angstrom Anders Jonas Ångström length 10e-10 m baud Jean-Maurice-Émile Baudot signal transmission speed 1 unit per second becquerel Bq Antoine-Henri Becquerel disintigration rate one disintigration per second bel B Alexander Graham Bell power comparison dimensionless biot Bi Jean Baptiste Biot electric current 10 A blondel André-Eugène Blondel luminence p cd·m Bohr magneton Niels Henrik David Bohr magnetic moment eh/4 p m e brewster B Sir David Brewster stress-optical coefficient m /N Bubnoff unit Bubnoff speed 10e-6 m/year clausius Cl Rudolf Julius Emanuel Clausius entropy cal/K coulomb C Charles-Augustin de Coulomb electric charge A·s curie Ci Marie and Pierre Curie disintigrtion rate 3.7e10 Bq dalton John Dalton mass 1/16 the mass of an oxygen-16 atom darwin Charles Darwin evolutionary change debey D Peter Joseph Wilhelm Debey electric dipole moment (10e-19/c) C·m einstein E Albert Einstein quanity of light one mole of photons Eotvos unit E Roland, Baron von Eötvös gradient of acceleration 10e-9 s erlang r Agner Krarup Erlang communications traffic intensity farad F Michael Faraday electric capacitance A·s/V faraday Fd Michael Faraday electric charge the charge of a mole of electrons fermi fm Enrico Fermi length 10e-15 m franklin Fr Benjamin Franklin electric charge 3.33564e-10 C

49. Full Alphabetical Index Translate this page Hankel, Hermann (94*) Hardy, Godfrey H (421) Hardy, Claude (421) Harish-Chandra (413*)Harriot, Thomas (498) Hartley, Brian (466*) hartree, douglas (436*) Hasse http://www.geocities.com/Heartland/Plains/4142/matematici.html

50. Browse The Turing Digital Archive Paper, 10 sh. in envelope. Keywords ACE (Automatic Computing Engine); hartree,douglas Rayner. Copyright Reproduced with the permission of R. hartree. http://www.turingarchive.org/browse.php/B/2

Browse the Turing Digital Archive Contents of AMT/B/2 ( up to B Xerox of MS notes taken by D.R. Hartree of lectures on ACE given by AMT. The notes were made available through the kindness of Prof. M.V. Wilkes, to whom they were passed on by DRH. In an attached note, Prof. Wilkes writes, ‘On a series of Thursday afternoons Dec. 1946 and January 1947, Turing delivered a course of 7 lectures on the design of the ACE at the Ministry of Supply in London.’ The notes are dated 23 and 30 Jan. by Hartree. They refer only to lectures 6 and 7 of the course. Paper, 10 sh. in envelope. Keywords: ACE (Automatic Computing Engine); Hartree, Douglas Rayner Reproduced with the permission of R. Hartree. Introduction Browse Search Index

51. Index Of The Turing Digital Archive Hardy, Godfrey Harold, D/5; hartree, douglas Rayner, B/2;Hazelhurst, Sussex, K/1; Heisenberg, Werner, B/43; http://www.turingarchive.org/index/

Index of the Turing Digital Archive If you can't find what you want in this index, try searching for some key words or phrases or try browsing by category. ‘A diffusion reaction theory of morphogenesis in plants’, C/7 ‘A formal theorem in Church’s theory of types’, B/29 ‘A method for the calculation of the zeta-function’, B/17 ‘A new mechanism which slows simple conditioning’, B/34 ‘A note on normal numbers.’, C/15 ‘A practical form of type theory I’, B/3 ‘A practical form of type theory II’, C/6 A.M. Turing Award, A/24 A.M. Turing’s Original Proposal for the Development of an Electronic Computer, B/25 Abraham, M., B/33 ACE (Automatic Computing Engine), B/1 B/2 C/32 Alan Turing : the Enigma, A/38 A/40 D/11 D/12 ... D/13 Alexander, C. Hugh, A/17 Almost periodic functions, B/10 D/11 ‘An electrical hypothesis of central inhibition ...’, B/48 Andrews, A.J.P., A/15 ‘Another proof’, C/23 Ashby, W. Ross, B/34 Association of Computing Machinery, A/24 Bachman, Charles W., A/24 Ball, W.W. Rouse, B/35 Bates, John A.V., A/5 Baum, Rudy M., A/40 Bayley, Don, A/5 BBC, B/5 B/6 ‘Bemerkungen zu den Grundlagen der Geometrie’

52. Virtual Travelog | The Moore School Lectures And The British Lead In Stored Prog Electronic Control Company. Goldstine, Herman H. Institute for Advanced Study,Princeton. hartree, douglas R. University of Manchester. Lehmer, Derrick II. http://www.virtualtravelog.net/entries/000047.html

Virtual Travelog http://www.virtualtravelog.net/ Complexity Globalization ... Technology The Moore School Lectures and the British Lead in Stored Program Computer Development (1946 -1953) System Design Technology In 1946 between 8th July and 31st August the Moore School of Electrical Engineering at the University of Pennsylvania held a special course entitled Theory and Techniques for Design of Electronic Digital Computers. The course was organized in response to interest generated by; the schools public announcement of the ENIAC, and the publication of The First Draft of a Report on the EDVAC. 1945 by Jon von Neumann. Attendance was by invitation only and the "Students" were selected from the leading experts at the major institutions working on the development of computing devices in the US and UK. At the time of this event there were only three published designs for a stored program computer and it was expected that all those present were familiar with these documents. The First Draft of a Report on the EDVAC. by Jon von Neumann. 1945 Proposed Electronic Calculator.

53. Virtual Travelog: Comment On Charles Babbage And Howard Aiken. How The Analytica douglas R. hartree was highly influential in the development of thestored program computer in the UK. After Vaneevar Bush he built http://www.virtualtravelog.net/cgi-bin/mt-comments.cgi?entry_id=61

54. Cities Of Science - Greater Manchester - An Ingenious Analogue Computer Switch totext only. Search by postcode or keyword. douglas hartree. The Museum ofScience and Industry, Manchester. An ingenious analogue computer douglas hartree. http://www.citiesofscience.co.uk/go/Manchester/ContentPeople_2809.html

Cities of Science Manchester Home Places People Events ... Back to Cities of Science Switch to: text only Search by postcode or keyword Douglas Hartree The Museum of Science and Industry, Manchester Streetmap Email this article to a friend Print this page Related Articles Science and Industry in Manchester You are in: Portal Home Greater Manchester An ingenious analogue computer Douglas Hartree Douglas Hartree was a theoretical physicist who developed powerful methods in numerical analysis. His initial interest in numerical methods arose from his work on anti-aircraft gunnery in 1916-18. He was professor of Applied Maths and Physics at Manchester University between 1929 and 1945. Douglas Hartree built a machine to solve differential equations. This was before the days of digital computers when machines of this kind worked on analogue principles. The first analyser was created with the help pf Meccano in 1934. The full scale machine was engineered by Metropolitan Vickers and completed in 1935. The photograph shows about half of the original machine. One of its applications was to analyse train running times but it had many other uses. Submitted by: Andrew Hunt, 04 December 2003

55. Hartree Energy - Encyclopedia Article About Hartree Energy. Free Access, No Regi See also Nobel Prize in physics; List of physicists; Institute of Physics Click the link for more information. douglas hartree. http://encyclopedia.thefreedictionary.com/Hartree energy

Dictionaries: General Computing Medical Legal Encyclopedia Hartree energy Word: Word Starts with Ends with Definition The Hartree energy (symbol E h ) is a physical constant In science, a physical constant is a physical quantity whose numerical value does not change. It can be contrasted with a mathematical constant, which is a fixed value that does not directly involve a physical measurement. There are many physical constants in science, some of the most famous being: Planck's constant, the gravitational constant, and Avogadro's constant (better known as Avogadro's number). Constants can take many forms: the Planck length represents a fundamental physical distance; the speed of light in a vacuum signifies a maximum speed limit of the universe; and the fine-structure constant, which characterizes the interaction between electrons and photons, is dimensionless. Click the link for more information. used as atomic unit Atomic units (au) are a convenient system of units of measurement used in atomic physics, particulary for describing the properties of electrons. The atomic units have been chosen such that the fundamental electron properties are all equal to one atomic unit. The atomic units are: length: the Bohr radius mass: the electron rest mass charge: the elementary charge e energy: the Hartree energy Click the link for more information.

56. Scientific Constants Named After People - Encyclopedia Article About Scientific The hartree energy (symbol E h ) is a physical constant used as atomic unitof energy, named after physicist douglas hartree. douglas hartree. http://encyclopedia.thefreedictionary.com/Scientific constants named after peopl

Dictionaries: General Computing Medical Legal Encyclopedia Scientific constants named after people Word: Word Starts with Ends with Definition This is a list of physical Physics physikos natural physis ): Nature) is the science of Nature in the broadest sense. Physicists study the behaviour and interactions of matter and radiation. The laws of physics are generally expressed as mathematical relations. Physics is very closely related to the other natural sciences, particularly chemistry, the science of molecules and the chemical compounds that they form in bulk. Chemistry draws on many fields of physics, particularly quantum mechanics, thermodynamics and electromagnetism. However, chemical phenomena are sufficiently varied and complex that chemistry is usually regarded as a separate discipline. Click the link for more information. and mathematical Mathematics is commonly defined as the study of patterns of structure, change, and space; more informally, one might say it is the study of 'figures and numbers'. In the formalist view, it is the investigation of axiomatically defined abstract structures using logic and mathematical notation; other views are described in Philosophy of mathematics. Mathematics might be seen as a simple extension of spoken and written languages, with an extremely precisely defined vocabulary and grammar, for the purpose of describing and exploring physical and conceptual relationships. Click the link for more information.

57. Eponyms hartree, douglas Rayner hartree (18971958), English mathematician andphysicist. havelock, Sir Henry Havelock (1795-1857), British general. http://users.tinyonline.co.uk/gswithenbank/eponyms.htm

Eponyms An eponym is a word derived from the name of a real, fictional, mythical or spurious character or person. Most eponyms originate from a person's surname: boycott , for instance, from the Irish landlord Captain Charles Cunningham Boycott; dahlia , from the Swedish botanist Anders Dahl; the sousaphone , from the American bandmaster John Philip Sousa; and volt , from the Italian physicist Count Alessandro Volta. Many eponymous words come from literary, biblical or mythological sources: malapropism , from Mrs Malaprop in Sheridan's The Rivals Dickensian , from the English writer Charles Dickens; as old as Methuselah , from the age of the Old Testament patriarch; and aphrodisiac , from the Greek goddess of love and beauty Aphrodite. There are thousands of eponyms in everyday use in English today and study of them yields a fascinating insight into the rich heritage of the world's most popular language and its development. Here are some more examples of names that have been immortalised in such a way. A B C D ... W X Y Z A Aaron's beard/rod Aaron, brother of Moses

58. Catálogo De Autores hartree, douglas Rayner (1); Hartshorn, J. E (1); Hartsuch, Bruce http://biblioteca.ing.ucv.ve/ALEXANDR/CATALOGOS/bfi_ucv/Cat.Aut_10.HTM

H Hckel, Walter H„gglund, Erik H„nchen Richard Ha, Junsoo S. ... Hyslop, J.H

59. The Priorities Committee Characters Wilkes Mike Woollett Mutch Sid Barton Miller Peter Chamberlain GillDonald willis douglas Gordon Stevens hartree Ken Machin Cleaner Margaret http://www.cl.cam.ac.uk/Relics/priorities.html

The Priorities Committee Home Research Teaching People ... Search Source file: priorities.html Page last updated on Tue Dec 21 10:40:41 GMT 1999 by Chris Hadley ( ckh@cl.cam.ac.uk Please send any comments to pagemaster@cl.cam.ac.uk

60. Computational Physics: Hartree - Differential Analyzer douglas hartree s Differential Analyzer. Early 30 s differential analyzerinvented by Vannevar Bush; 1934 - hartree built a differential http://csep1.phy.ornl.gov/comp-phys/seminar/hartree2.html

Douglas Hartree's Differential Analyzer Early 30's - differential analyzer invented by Vannevar Bush 1934 - Hartree built a differential analyzer at Manchester with colleagues Phyllis Lockett, David Copeley and Oscar Buneman Integrated the Schroedinger equation Solved the Poisson equation with a 24 point discrete Fourier transform (at this point Gauss's original FFT program written in Latin was still undiscovered) Applied algorithm to heat flow and the problem of cooking steel ingots (Phyllis had become Mrs. Nicholson and her assistant was Crank) During WWII - he worked on radar and ballistics problems

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