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	NationMaster - Encyclopedia: Harold Jeffreys (Site not responding. Last check: 2007-10-26)
		Harold Jeffreys was born on 22 April 1891 at Fatfield, a colliery village in County Durham where his father was headmaster of the village school.
		Jeffreys was elected a fellow of St John's College in November 1914 and remained one for the rest of his life.
		Jeffreys was also distinguished as a statistician, developing a theory of probability on Bayesian principles and in a form suitable for use in the physical sciences.
	www.nationmaster.com /encyclopedia/Harold-Jeffreys (1015 words)

	Harold Jeffreys - Wikipedia, the free encyclopedia
		Sir Harold Jeffreys (22 April 1891 – 18 March 1989) was a mathematician, statistician, geophysicist, and astronomer.
		Jeffreys received the Gold Medal of the Royal Astronomical Society in 1937.
		Harold Jeffreys at the MacTutor History of Mathematics archive.
	en.wikipedia.org /wiki/Harold_Jeffreys (257 words)

	Jeffreys biography
		Harold Jeffreys attended school at Fatfield then, in 1903, he was awarded a scholarship to attend Rutherford College in Newcastle- upon- Tyne.
		Jeffreys was to remain on the staff at Cambridge, but not as a mathematician.
		As a result of his study of earthquake waves, Jeffreys became the first to claim that the core of the Earth is liquid.
	www-groups.dcs.st-and.ac.uk /~history/Biographies/Jeffreys.html (660 words)

	Janus: Papers and correspondence of Sir Harold Jeffreys
		Harold Jeffreys was born on 22 April 1891 at Fatfield, a colliery village in County Durham where his father was headmaster of the village school.
		Jeffreys was elected a fellow of St John's College in November 1914 and remained one for the rest of his life.
		Jeffreys was also distinguished as a statistician, developing a theory of probability on Bayesian principles and in a form suitable for use in the physical sciences.
	janus.lib.cam.ac.uk /db/node.xsp?id=EAD/GBR/0275/Jeffreys (965 words)

	Harold Jeffreys as a Statistician
		Jeffreys was a noted physical scientist who re-established the statistical theory of his time on Bayesian foundations.
		Jeffreys is often described as the founder of modern British geophysics.
		Jeffreys (1933) criticised Fisher (1932) and Fisher (1933) criticised Jeffreys (1932) with a rejoinder, Jeffreys (1933a).
	www.economics.soton.ac.uk /staff/aldrich/jeffreysweb.htm (2574 words)

	Harold Jeffreys, Sir Biography / Biography of Harold Jeffreys, Sir Biography
		Harold Jeffreys was born on April 22, 1891, in Durham, England.
		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.
		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.
	www.bookrags.com /biography-harold-jeffreys-sir (596 words)

	Harold Jeffreys: bio and encyclopedia article (Site not responding. Last check: 2007-10-26)
		Sir Harold Jeffreys (22 April 1891 – 18 March 1989) was a mathematician, EHandler: no quick summary.
		Bertha swirles (lady jeffreys), (22 may, 1903 - 18 december, 1999) carried out research on quantum theory, particularly in its early days....
		Harold Evans[Follow this hyperlink for a summary of this subject]
	www.absoluteastronomy.com /encyclopedia/h/ha/harold_jeffreys.htm (764 words)

	Fancy finger work: Alpha Jeffreys, 97, preserves art form of tatting (Site not responding. Last check: 2007-10-26)
		Jeffreys, who turned 97 Wednesday, has one 3-inch brass shuttle that she's been using for more than 80 years to work her magic with a ball of thread, The result is dainty handwork using the almost lost art of tatting.
		Jeffreys said she didn't know many others who tatted when she was growing up and still doesn't, but she has taught at least one woman the technique.
		Jeffreys went to Florence State Normal School, which was a teachers' college at the time (now the University of North Alabama).
	www.decaturdaily.com /decaturdaily/livingtoday/050107/tat.shtml (893 words)

	Lamont-Doherty Earth Observatory - The Vetlesen Prize - Acceptance Speech - Walter H. Munk
		Jeffreys also had a blind spot for magnetics, which made him overlook the most compelling evidence for plate tectonics.
		Jeffreys stayed with his view of a rigid Earth till his death.
		He had asked Harold Jeffreys what single geophysical measurement would make the biggest difference, and Harold had replied instantly: measure the heat flow through the sea floor.
	www.ldeo.columbia.edu /vetlesen/recipients/1993/munk_accept.html (2167 words)

	História - Biografias:
		We began by attending a lecture course given by Professor Harold Jeffreys on Probability.
		ZELLNER, A. (ed.) Bayesian analysis in econometrics and statistics: essays in honor of Harold Jeffreys.
		COOK, A. Sir Harold Jeffreys, Biographical Memoirs of Fellows of the Royal Society of London 36 (1990), 301-334.
	www.pucrs.br /famat/statweb/historia/daestatistica/biografias/Jeffreyes.htm (688 words)

	David Howie - Interpreting Probability: Controversies and Developments in the Early Twentieth Century - Reviewed by ... (Site not responding. Last check: 2007-10-26)
		Jeffreys used an elementary argument for the probability being one third.
		Jeffreys, by contrast, believed that only a systematically developed theory of Bayesian probability could furnish an adequate theory of valid uncertain inference from data.
		He claimed that significance testing is unsound since, based as it is on the probability according to the null hypothesis of data at least as extreme as that observed, it involves the consideration of data that have actually not been observed.
	ndpr.nd.edu /review.cfm?id=1176 (1571 words)

	Appendix A
		In 1930, moreover, Harold Jeffreys mathematically demonstrated that, given the earth's internal friction, damping of the required excessive tidal bulge would take place, preventing any separation of material.
		They proposed that the moon had accreted from gas and dust elsewhere in the solar system, was later captured by the earth at a close distance, and then moved out to its present radius from the radius of first capture.
		Harold Urey, for one, argued that any contamination of the moon would be localized and not likely to affect other areas in the harsh environment: "This talk has caused a lot of trouble.
	history.nasa.gov /SP-4210/pages/App_A.htm (2259 words)

	Harold Jeffreys - Definition, explanation
		Sir Harold Jeffreys (22 April 1891 – 18 March 1989) was a mathematician, statistician, geophysicist, and astronomer.
		He was born in Fatfield, County Durham, England.
		Among his other contributions was a Bayesian approach to probability, and the idea that the Earth's planetary core was liquid.
	www.calsky.com /lexikon/en/txt/h/ha/harold_jeffreys.php (191 words)

	Press Release - University of Newcastle Upon Tyne
		Now, the man responsible for these discoveries, British astronomer and geophysicist Sir Harold Jeffreys FRS (1891ñ1989), is to be commemorated by the North Eastern Branch of the Institute of Physics.
		The Institute has erected a plaque in honour of Sir Haroldís achievements in the Armstrong Building in Newcastle University, where Sir Harold was a student in the early 1900s.
		Harold Jeffreys was born in Fatfield in 1891.
	www.ncl.ac.uk /press.office/press.release/content.phtml?ref=964514777 (452 words)

	Lady Jeffrey Obituary
		She took a personal and warm interest in all her students and there was often "open house" for them on Sunday evenings at the Jeffreys residence halfway between Girton and the centre of Cambridge.
		Her interest did not cease when students left Cambridge; she and Harold had no children, but there was an enormous extended family based on her former pupils.
		Bertha Jeffreys played a leading role in women's education this century, and she inspired students of mathematics world-wide.
	www.physics.ucla.edu /~cwp/articles/jeffreys/jeffreys-obituary.html (912 words)

	Holland and Jeffreys Elected to Peoples Holding Company Board of..
		Harold Jeffreys graduated from the University of North Alabama with a Bachelor of Science degree in Physics and Math and received his masters from the University of Alabama in Huntsville.
		Jeffreys is the founder of Applied Research, Incorporated and is a retired physicist.
		Jeffreys is married to the former Judy Burton and they have two children, Mary Kathryn and Ben Anderson Matthew.
	www.amex.com /newsDetails/CmnNewsDet.jsp?id=XpressFeed_NewsDetails_1107992735260.html (517 words)

	CWP at physics.UCLA.edu //Bertha Swirles, Lady Jeffreys
		Methods of Mathematical Physics with Harold Jeffreys; Cambridge University Press 1946, 1950, 1956 (reprinted 1962, 1966) paperback 1972.
		3-6, Sir Harold Jeffreys and Bertha Swirles (Lady Jeffreys), ed.; Gordon and Breach Science Publishers, New York and London, 1971-77.
		At this end of the 20th century I find it disappointing that the proportion of women is still small.
	cwp.library.ucla.edu /Phase2/Jeffreys,_Bertha_Swirles@844118401.html (495 words)

	WKB approximation - Wikipedia, the free encyclopedia
		This method is named after physicists Wentzel, Kramers, and Brillouin, who all developed it in 1926.
		In 1923, mathematician Harold Jeffreys had developed a general method of approximating linear, second-order differential equations, which includes the Schrödinger equation.
		But since the Schrödinger equation was developed two years later, and Wentzel, Kramers, and Brillouin were apparently unaware of this earlier work, Jeffreys is often neglected credit.
	en.wikipedia.org /wiki/WKB_approximation (740 words)

	Sir Harold Jeffreys Biography (1891–1989) Online Encyclopedia Article About Sir Harold Jeffreys Biography ...
		Sir Harold Jeffreys Biography (1891–1989) Online Encyclopedia Article About Sir Harold Jeffreys Biography (1891–1989)
		In mathematics he made contributions to probability theory and operational calculus.
		Do not copy, download, transfer, or otherwise replicate the site content in whole or in part.
	encyclopedia.jrank.org /Cambridge/entries/068/Sir-Harold-Jeffreys.html (155 words)

	Alibris: Jeffreys
		Jeffreys has interviewed 15 top motivational speakers in American--including Anthony Robbins, Wayne Dyer, Barbara De Angelis, Les Brown, Mark Victor Hansen, Jack Canfield, Art Linkletter, and Jeanne Robertson--to learn how they prepare themselves to speak, how they pick their topics, how they keep their audiences attentive, and what makes them...
		On America's back porch the most diverse and exotic cultures flourish in wild abandon; but it often takes the scrutiny of an outside observer, with an eye for the bizarre, to bring into relief the hilarious, often unsettling, bounty of strange experiences hiding within the mundane.
		This third edition of Rhodri Jeffreys-Jones's engrossing history of the Central Intelligence Agency includes a new prologue that discusses the history of the CIA since the end of the Cold War, focusing in particular on the intelligence dimensions of the terrorist attacks on 9/11.
	www.alibris.com /search/books/author/Jeffreys (751 words)

	April 22 - Today in Science History (Site not responding. Last check: 2007-10-26)
		He calculated the surface temperatures of gas at less than -100°C, contradicting then accepted views of red-hot temperatures, but Jeffreys was shown to be correct when direct observations were made.
		Analyzing earthquake waves (1926), he became the first to claim that the core of the Earth is molten fluid.
		Jeffreys also contributed to the general theory of dynamics, aerodynamics, relativity theory and plant ecology.«
	www.todayinsci.com /4/4_22.htm (2741 words)

	Earthquake Hazards Program: An Interview with Sir Harold Jeffreys (Site not responding. Last check: 2007-10-26)
		Sir Harold Jeffreys is a world authority in theoretical geophysics.
		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.
		In the citation for the Medal of the Seismological Society of America, his colleague Dr. Ralph Lapwood noted that Sir Harold still rides his bicycle in nearly all weathers and maintains his lifelong hobby of natural history.
	neic.usgs.gov /neis/seismology/people/int_jeffreys.html (1643 words)

	Progress Report no. 35
		Correspondence is presented in a number of sequences including scientific correspondence arranged alphabetically by correspondent and covering the period 1922-1995 and a chronological sequence of shorter correspondence, 1914-1995.
		Lady Jeffreys’s own papers (currently in process) contain a sizeable component of material relating to Sir Harold reflecting the many tributes, memorials, conferences in his honour and the like which followed in the ten years after his death and with which Lady Jeffreys was very much involved.
		It is evident from the archival record that Lady Jeffreys took very seriously in relation to her husband’s papers the establishment of a Contemporary Scientific Archives Centre in Oxford in 1973 (the predecessor organisation of the NCUACS) and she was in regular contact with the NCUACS in the decade following Sir Harold’s death.
	www.bath.ac.uk /ncuacs/prgrep35.htm (7474 words)

	[No title] (Site not responding. Last check: 2007-10-26)
		According to Jeffreys, use of prior probabilities is no embarrassment, since priors represent the expertise or background knowledge a scientist brings to the data.
		Jeffreys asserted that scientists are not interested in the properties of some remote, hypothetical population.
		Jeffreys maintained that researchers should be interested in the obtained data, not a sampling distribution averaged over all possible samples (Howie, 2002).
	seamonkey.ed.asu.edu /~alex/pub/2004AERA.doc (6339 words)

	Guide I-K
		Jeffreys was a member of the original executive committee.
		For example, Desmond King-Hele passed to Lady Jeffreys his correspondence with Jeffreys, 1961-1989, and Dorothy Stoneley gave to her Jeffreys’s letters to Robert Stoneley, including undated letters, probably from the 1920s and 1930s.
		There are photographs of ‘Harold’s Youth’, portrait photographs, photographs at various award ceremonies and with Lady Jeffreys, colleagues and friends and photographs taken on visits and at conferences.
	www.bath.ac.uk /ncuacs/guidei-k.htm (11114 words)

	The Statistical Education of Harold Jeffreys, John Aldrich
		In 1933-4 Jeffreys had a controversy with R.A. Fisher, the leading statistician of the time.
		Prior to the encounter, Jeffreys had worked on probability as the basis for scientific inference and had used methods from the theory of errors in astronomy and seismology.
		After the encounter Jeffreys produced a full-scale Bayesian treatment of statistics in the form of his Theory of Probability.
	projecteuclid.org /getRecord?id=euclid.isr/1133819156 (998 words)

	math lessons - Bayesian probability
		Another line of argument is based on probability as an extension of ordinary logic to degrees of belief other than 0 and 1.
		The chief exponents of this objectivist school were Edwin Thompson Jaynes and Harold Jeffreys.
		Advocates of logical (or objective epistemic) probability, (such as Harold Jeffreys, Richard Threlkeld Cox, and Edwin Jaynes), hope to codify techniques that would enable any two persons having the same information relevant to the truth of an uncertain proposition to independently calculate the same probability.
	www.mathdaily.com /lessons/Bayesian_probability (1403 words)

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