21. Harold Jeffreys, Sir Biography / Biography Of Harold Jeffreys, Sir Main Biograph harold jeffreys, sir Biography profile biographies life history. http://www.bookrags.com/biography/harold-jeffreys-sir/

Search BookRags.com English History Other Subjects Essays Biographies Research Topics eBooks Register Login Help Literature Study Guides ... Games Welcome, Guest Why not Login or Register Biography Navigation Main Biography How to Cite Order the PDF Home Biography Harold Jeffreys, Sir Main Biography Complete Biographical Resource See related items by keyword: university theory mathematics astronomy ... operational calculus Name: Harold Jeffreys, Sir Birth Date: April 22, 1891 Death Date: March 18, 1989 Place of Birth: Durham, England Place of Death: Durham, England Nationality: English Gender: Male Occupations: scientist, mathematician, astronomer, geophysicist Harold Jeffreys, Sir Main Biography British mathematician, astronomer, geophysicist, and philosopher Sir Harold Jeffreys (1891-1989) was one of the great original applied-mathematical thinkers of the 20th century. He is noted for his wide variety of scientific contributions. Harold Jeffreys was born on April 22, 1891, in Durham, England. He graduated from Durham University and then carried out research in chemistry and photography. He won major prizes at the University of Cambridge, from which he graduated in 1917, in mathematics, astronomy, and geophysics. At Cambridge he was a lecturer in mathematics, reader in geophysics, and Plumian professor of astronomy and experimental philosophy from 1946 to his retirement in 1958. In 1940 he married Bertha Swirles, a talented mathematician and a fellow of Girton College, Cambridge. Scientific Contributions Using observations on the earth's bodily tides, Jeffreys, in 1926, gave the first quantitative estimate of the rigidity of the earth's core and established that most of the core is probably molten. He was the senior author of tables produced during 1930-1940, giving the travel times of earthquake waves through the interior of the earth. Since 1940 these tables have been used as the standard in calculating the epicenters and origin times of the world's earthquakes for the International Seismological Summary. Jeffreys also contributed notably to theories of seismic wave propagation, of mutations of the earth's axis, on mountain building, on convection currents inside the earth, on tidal problems, on the figure of the earth and the moon, and a theory on the internal structures of other terrestrial planets.

22. BookRags Biographies harold jeffreys, sir. Biography. John Rushworth Jellicoe. Biography OtherResources ›››. Mae C. Jemison. Biography. Roy Harris Jenkins. Biography http://www.bookrags.com/biography/J.html

Search BookRags.com English History Other Subjects Essays Biographies Research Topics eBooks Register Login Help Literature Study Guides ... Games Welcome, Guest Why not Login or Register Home Biography Biographies Browse Category by Title Biographies Top 7 Biographies William Shakespeare Anne Frank Michael Jordan Mark Twain ... Marco Polo BookRags Biographies are the most complete biographical resource available. Each biography is written by a biographical expert, professional educator, or scholar of the individual. Our feature-rich biographies detail accomplishments and place the individual in a historical context. Get the Biography Pass Filter by Letter: All A B C ... Z All Biographies (1950 to Present Discoveries) (1800 to 1899 Discoveries) Ernst Junger (Biography) ... (Biography) 1 of 831 for Biographies - About Customer Service Report an Error Tests ... Argos

23. Lamont-Doherty Earth Observatory - Biography Of Vetlesen Prize Winner - Sir Haro sir harold jeffreys Photo of sir harold jeffreys (18911989). Born April 22,1891, at Fatfield, near Washington, County of Durham, England. http://www.ldeo.columbia.edu/vetlesen/recipients/1962/jeffreys_bio.html

The Vetlesen Prize HOME ABOUT THE PRIZE RECIPIENTS PROCEDURE ... ABOUT THE FOUNDATION Biography Sir Harold Jeffreys Born April 22, 1891, at Fatfield, near Washington, County of Durham, England. Only child of Robert Hall Jeffreys and Elizabeth Mary (Sharpe) Jeffreys. Education: Fatfield School until 1903 Rutherford College, Newcastle-on-Tyne, to 1907 Armstrong College, 1907-1910 St. John's College, Cambridge, B. Sc. 1912 University of Durham, M. Sc. 1912; D. Sc. 1917 University of Cambridge, M. A. 1917 Appointments: Fellow, St. John's College, Cambridge, 1914 Senior professional assistant, Meteorological Office, 1917-22 Lecturer in Mathematics, University of Cambridge, 1922-31 Reader in Geophysics, University of Cambridge, 1931-46 Plumian Professor of Astronomy, University of Cambridge 1946-58

24. Lamont-Doherty Earth Observatory - The Vetlesen Prize - Acceptance Speech - Walt Fig. 3 harold jeffreys (18911989) at the 1961 Pacific Science Congress in Hawaii . sir Edward (Teddy) Bullard received the award in 1968. http://www.ldeo.columbia.edu/vetlesen/recipients/1993/munk_accept.html

The Vetlesen Prize HOME ABOUT THE PRIZE RECIPIENTS PROCEDURE ... ABOUT THE FOUNDATION Acceptance Speech Walter H. Munk I have the honor of having known all but one of the recipients of the Vetlesen Prize. To a remarkable extent, they reflect the prime adventure of Earth Science in our life time: the discovery of Plate Tectonics. Fig. 1: Maurice Ewing (1906-1974) aboard the Woods Hole research vessel Atlantis. This photograph was probably taken in October 1935 when Ewing, Crary and Rutherford made the first seismic profiles in the open sea. "Doc" Ewing, as he was called, worked his students hard and himself harder. Just before sailing, he would go below into the vessel's machine shop and turn a lathe all night preparing an instrument, and then go on all day taking observations, with the inevitable result shown in Fig. 1. Fig. 2: Felix Andies Vening Meinesz (1887-1966) to the left (probably in the 1950's). Beno Gutenberg to the right.

25. Harold Jeffreys As A Statistician Dennis V. Lindley (1998) sir harold jeffreys Encyclopedia of AH Cook (1991)sir harold jeffreys, Biographical Memoirs of Fellows of the Royal Society, http://www.economics.soton.ac.uk/staff/aldrich/jeffreysweb.htm

Harold Jeffreys as a Statistician The Jeffreys prior is part of the furniture of Bayesian statistics but beyond that the work of Harold Jeffreys is little known. Jeffreys was a noted physical scientist who re-established the statistical theory of his time on Bayesian foundations. This page is a guide to literature and websites which may be useful to anyone interested in Jeffreys’s statistical work and its background. The emphasis is on Jeffreys’s own writings and on the older literature. John Aldrich, University of Southampton, Southampton, UK. home Original version February 2003 Most recent changes August 2005 Intro d u c ... After Probability Links This guide has links to some free sites, including MacTutor for biographies and the University of Adelaide Library for R. A. Fisher material. There are also links to the institutional subscription service JSTOR : for information go to http://www.jstor.org/ Introduction Around 1930 Harold Jeffreys F.R.S. (1891-1989), an established writer on physics, applied mathematics and scientific method, began applying his version of the Bayesian argument to statistics. Over the next decade or two he produced more than 20 articles on statistics and a large book, Theory of Probability.

26. Encyclopedia Of Astronomy And Astrophysics » Jeffreys, Sir Harold (1891–19 jeffreys, sir harold (1891–1989). DOI 10.1888/0333750888/3743; PublishedNovember 2000. Icon Full text (PDF, 15K) http://eaa.iop.org/index.cfm?action=summary&doc=eaa/3743@eaa-xml

27. Encyclopedia Of Astronomy And Astrophysics » Browse By Title Article jeffreys, sir harold (1891–1989); Published November 2000; SummaryGeophysicist and mathematician, born in Fatfield (near Durham), England, http://eaa.iop.org/index.cfm?action=browse.home&type=ti&dir=J

28. Earthquake Hazards Program: An Interview With Sir Harold Jeffreys The USGS Earthquake Hazards Program provides earthquake information for currentand past earthquakes, hazards and preparedness information, and education http://neic.usgs.gov/neis/seismology/people/int_jeffreys.html

Latest Quakes For Kids Only Regional Websites HOME ... SEARCH For Kids Only An Interview with Sir Harold Jeffreys Sir Harold Jeffreys - An Interview by Henry Spall U.S. Geological Survey, Reston, Va. Sir Harold Jeffreys is a world authority in theoretical geophysics. He was born in Northumbria (the northeast of England) and educated at Armstrong College (now the University of Newcastle-upon-Tyne) and Cambridge University. He is now a Senior Fellow of St. John's College, Cambridge. He has published over 300 scientific papers and is the author of 7 books, including Theory of Probability and Mathematical Physics (with his wife, Lady Bertha Swirles Jeffreys). Sir Harold has made innumerable theoretical contributions to seismology. Many of these are documented in his book The Earth , which has been published in six editions. His papers have recently been collated by Gordon and Breach (Publishers) into six volumes, Collected Papers of Sir Harold Jeffreys on Geophysics and Other Sciences . Some idea of the breadth of this research can be seen from the individual volume titles: "Theoretical and Observational Seismology," "Observational Seismology," "Gravity," "Dissipation of Energy and Thermal History," "Astronomy and Geophysics," and "Mathematics, Probability and Miscellaneous Other Sciences." Sir Harold has also served as Director of the International Seismological Summary (ISS). Among the honors bestowed upon him by various scientific organizations are Fellow of the Royal Society, Royal and Copley Medals of the Royal Society, Foreign Associate of the U.S. National Academy, Bowie Medalist of the American Geophysical Union, Medalist of the Seismological Society of America, and the Vetlesen Prize.

29. Earthquake Hazards Program: The Men And Women Of Seismology sir harold jeffreys. Item Biography. Item An Interview. Item harold jeffreys asa Statistician. Inge Lehmann. Item Biography. Item Biography http://neic.usgs.gov/neis/seismology/people/people.html

Latest Quakes For Kids Only Regional Websites HOME ... SEARCH For Kids Only The Men and Women of Seismology John Anderson Picture Hugo Benioff Picture Walter Bucher Biography William Maurice Ewing Biography Edward Flinn Biography Beno Gutenberg Biography Biography Biography and Picture Harry Hammond Hess Biography Spreading the Seafloor Sir Harold Jeffreys Biography An Interview Harold Jeffreys as a Statistician Inge Lehmann Biography Biography Reminiscences by Lady Jeffreys Augustus Love Biography and Picture James B. Macelwane, S.J. Biography John Milne Biography Andrija Mohorovicic Biography (in Croatian) Biography (English) Lord Rayleigh Biography Charles Richter The Richter magnitude scale was developed in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compare the sizes of earthquakes. An Interview Picture The Richter Magnitude Scale Alfred Wegener Biography Moving Continents Charles Whitten Biography J. Tuzo Wilson Discovering Transforms and Hotspots Harry Wood Picture U.S. Department of the Interior

30. Life And Work Of Statisticians jeffreys, sir harold, 18911989. Detailed table of contents of Theory ofProbability, (much fuller than in the book itself) Postscript file, pdf file, http://www.york.ac.uk/depts/maths/histstat/lifework.htm

Life and Work of Statisticians Click here for portraits of statisticians Click here for other material relating to the history of statistics Click here for biographical information on the website of the American Statistical Association A ... Figures from the History of Probability and Statistics Page due to John Aldrich, University of Southampton Arbuthnot, John, 1667-1735 An Argument for Divine Providence, taken from the constant Regularity observ'd in the Births of both Sexes, Philosophical Transactions of the Royal Society of London Postscript file pdf file , or LaTeX source Arbuthnot's data of christenings in London for the years 1629-1710 (males for 82 years, then females for 82 years) Biography from St Andrews University site Arnauld, Antoine, 1612-1694 La logique de Port-Royal... Biography from St Andrews University site Aubrey, John, 1626-1697 Brief lives of statisticians (Graunt, Halley and Petty), Postscript file pdf file , or LaTeX source Brief lives of other mathematicians Biography Bachelier, Louis Jean Baptist, 1870-1946 Biography Bayes, Thomas, 1702-1761

31. Harold Jeffreys - Wikipedia, The Free Encyclopedia sir harold jeffreys (22 April 1891 – 18 March 1989) was a mathematician, statistician harold jeffreys Probabilistic Epistemology Between Logicism And http://en.wikipedia.org/wiki/Harold_Jeffreys

Wikimedia needs your help in its 21-day fund drive. See our fundraising page Over US$165,000 has been donated since the drive began on 19 August. Thank you for your generosity! Harold Jeffreys From Wikipedia, the free encyclopedia. Sir Harold Jeffreys 22 April 18 March ) was a mathematician, statistician, geophysicist, and astronomer. He was born in Fatfield County Durham England . He studied at Armstrong College in Newcastle-upon-Tyne , then part of the University of Durham but later to become the University of Newcastle . He then went to St John's College, Cambridge and became a fellow in . At Cambridge University he taught mathematics , then geophysics and finally became the Plumian Professor of Astronomy He married another mathematician and physicist, Bertha Swirles ), in and together they wrote Methods of Mathematical Physics Among his other contributions was a Bayesian approach to probability , and the idea that the Earth's planetary core was liquid. He was knighted in Jeffreys received the Gold Medal of the Royal Astronomical Society in edit References Maria Carla Galavotti. "Harold Jeffreys' Probabilistic Epistemology: Between Logicism And Subjectivism".

32. Harold Jeffreys - Enpsychlopedia at the MacTutor archive Biography of Vetlesen Prize Winner sir harold jeffreys It uses material from the Wikipedia article harold jeffreys . http://psychcentral.com/psypsych/Harold_Jeffreys

home resource directory disorders quizzes ... support forums Harold Jeffreys Sir Harold Jeffreys 22 April 18 March ) was a mathematician, statistician, geophysicist, and astronomer. He was born in Fatfield County Durham England . He studied at Armstrong College in Newcastle-upon-Tyne , then part of the University of Durham but later to become the University of Newcastle . He then went to St John's College, Cambridge and became a fellow in . At Cambridge University he taught mathematics , then geophysics and finally became the Plumian Professor of Astronomy He married another mathematician and physicist, Bertha Swirles ), in and together they wrote Methods of Mathematical Physics Among his other contributions was a Bayesian approach to probability , and the idea that the Earth's planetary core was liquid. He was knighted in edit References Maria Carla Galavotti. "Harold Jeffreys' Probabilistic Epistemology: Between Logicism And Subjectivism". British Journal for the Philosophy of Science , 54(1):43-57 (March 2003). (A review of Jeffreys' approach to probability; includes remarks on R.A. Fisher

33. SIR KARL RAIMUND POPPER, SIR HAROLD JEFFREYS, AND HEURISTIC SIMPLICITY IN SCIENC sir KARL RAIMUND POPPER, sir harold jeffreys, AND HEURISTIC SIMPLICITY IN SCIENCE Geophysicists know harold jeffreys (18911989) for his Earth, http://gsa.confex.com/gsa/2005AM/finalprogram/abstract_91767.htm

2005 Salt Lake City Annual Meeting (October 16–19, 2005) Paper No. 99-8 Presentation Time: 5:15 PM-5:30 PM SIR KARL RAIMUND POPPER, SIR HAROLD JEFFREYS, AND HEURISTIC SIMPLICITY IN SCIENCE GALVIN, Cyril , Coastal Engineer, Box 623, Springfield, VA 22150, galvincoastal@juno.com. Scientists know Karl Popper (1902-1994) for his Logic of Scientific Discovery , published first in German (1935, Vienna) and much later in English (1959, London). Geophysicists know Harold Jeffreys (1891-1989) for his Earth , which went through six editions (1924-1976). Chapter V in Popper (1935) deals with simplicity (Einfachheit) in science, Popper developing ideas of Hermann Weyl (1885-1955). Popper later discovered that Wrinch and Jeffreys (1921) anticipated Weyl (1927). In his (1959) footnotes, Popper gives Jeffreys credit for ideas on simplicity. Popper uses deduction idealistically to falsify scientific theories, and Jeffreys uses "common-sense" induction, which is logically untenable in Popper's view, to construct scientific theories. Popper considers the simpler equation to have lower probability, but Jeffreys observes that scientists choose as better the simpler of two equations describing the same phenomenon, even where the more complex equation fits the data better. A simple equation has the dependent variable, a physical quantity, as the left hand side of the equation and a function of n independent variables, also physical quantities, as the right hand side, where n is 0, 1, 2, 3, or 4. Each variable has k dimensions, where k is 0, 1, 2, or 3. These are Bridgman's L, T, M dimensions. Where the dependent variable equals a constant, n equals 0, but that constant has the dimensions of the dependent variable. Where an independent variable is dimensionless, k equals 0.

34. CWP At Physics.UCLA.edu //Bertha Swirles, Lady Jeffreys Collected Papers of sir harold jeffreys on Geophysics and Other Science Vols.36, sir harold jeffreys and Bertha Swirles (Lady jeffreys), ed.; http://cwp.library.ucla.edu/Phase2/Jeffreys,_Bertha_Swirles@844118401.html

Welcome to CWP at UCLA 86 Eminent Physicists Search the Archive Fascinating Documents AnnotatedPhoto Gallery In Her Own Words Some Physics History ... Photo Credits Mathematical Physics Contributions Publications Honors Bertha Swirles, Lady Jeffreys Jobs/Positions Education Additional Information Some Contributions: A non-relativistic quantum mechanical model for the internal conversion of gamma rays in nuclear transitions. Applications of what is now known as the Hartree-Fock approximation for many electron atoms. Papers on a variety of topics in theoretical physics; a selection is listed below. The influential and widely used text Methods of Mathematical Physics coauthored with husband Harold. Encouragement, inspiration, and training for many men and women studying mathematics and physics. Some Publications: "The Internal Conversion of Gamma Rays" Proc. Roy. Soc. 116: 491 (1927) and "The Internal Conversion of Gamma Rays - Part II" Proc. Roy. Soc. "The Absorption Coefficient of a Degenerate Gas" Mon. Not. R. Astr. Soc.

35. Lady Jeffrey Obituary Bertha Swirles, Lady jeffreys, obituary. to involve sampling Bertha s homemadeflapjack whilst sir harold sat on the floor doing the Times crossword. http://cwp.library.ucla.edu/articles/jeffreys/jeffreys-obituary.html

The Independent (London) December 22, 1999, Wednesday HEADLINE: OBITUARY: BERTHA JEFFREYS BYLINE: R M Williams BERTHA SWIRLES, Lady Jeffreys, did important research on quantum theory, particularly in its early days, and her association with Girton College, Cambridge, as student and Fellow, spanned more than 70 years. Born in Northampton in 1903, she was involved in the world of education from her earliest days. Her widowed mother was a primary-school teacher and various aunts were also teachers. She attended Northampton School for Girls and then went up to Girton, in 1921, to read Mathematics, graduating with first class Honours. She became a research student of R.H. Fowler, one of a distinguished company of his students which included several Nobel prizewinners such as P.A.M. Dirac and Subrahmanyan Chandrasekhar. She spent the winter semester of 1927-28 in Gottingen, where she worked under Max Born and Werner Heisenberg and interacted with many of the other leading continental workers in the relatively new field of quantum mechanics; it was an exciting time. By the time she was awarded her PhD in 1929, she was already an Assistant Lecturer in Manchester. This was followed by similar appointments in Bristol and at Imperial College, London, and then in 1933 she returned to Manchester as a Lecturer in Applied Mathematics. Douglas Hartree at Manchester was extremely sorry to lose such a valued colleague when she returned to Cambridge in 1938, to an Official Fellowship and Lectureship in Mathematics at Girton.

36. R.A. Fisher - Calendar Of Correspondence With (Sir) Harold Jeffreys Calendar of Correspondence with (sir) harold jeffreys, (St John s College Cambridge)June 1922 January 1953 and undated. 3 cm. 1922. 9 June 1922, http://www.library.adelaide.edu.au/digitised/fisher/corres/jeffreys/

@import "/lib/house.css"; The University of Adelaide Home Search Special Collections ... Library Home The University of Adelaide Library North Terrace ADELAIDE SA 5005 Phone: +61 8 8303 5372 Fax: +61 8 8303 4369 Email: Correspondence of Sir R.A. Fisher Calendar of Correspondence with (Sir) Harold Jeffreys, (St John's College Cambridge) June 1922 - January 1953 and undated. 3 cm. 9 June 1922 23 February 1934 24 February 1934 26 February 1934 ... Return to list of correspondents Last Modified 11/02/2005 CRICOS Provider Number 00123M Service Charter Privacy

37. Index Of The Turing Digital Archive A/28; Coote, sir Colin (Reith), A/15; Coxeter, harold Scott Macdonald, C/25 Jefferson, sir Geoffrey, A/16, A/29, B/44; jeffreys, sir harold, B/45 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. Introduction Browse Search Index

38. Browse The Turing Digital Archive Keywords jeffreys, sir harold; ‘The nature of mathematics’. Provenance Presentedto the Archive Centre in May 1996 by Professor Michael Yates, http://www.turingarchive.org/browse.php/B/45

Browse the Turing Digital Archive The item AMT/B/45 does not exist in the digital archive. Introduction Browse Search Index

39. Documents For An Access Point ISBN,Price, 0521592712 Sterling Pounds 45.00. Classification, 519.21. Keyword(s),1. DEDICATEE sir harold jeffreys 2. PROBABILITY THEORY http://libibm.iucaa.ernet.in/slim/wslxRSLT.php?A1=59363

40. Royal Society | About The Society | History Of Science | Biographies Of Fellows jeffreys, sir harold. Biographical Memoirs 1990 vol 36 pp 301333, plate, by sirAlan Cook. jeffreys, John Gwyn. Proceedings 1884-1885 vol 38 pp xiv-xviii http://www.royalsoc.ac.uk/page.asp?id=2373

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