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	Harold Urey - MSN Encarta
		Harold Urey (1893-1981), American chemist and Nobel laureate, best known for his discovery of deuterium, or heavy hydrogen,
		Harold Clayton Urey was born in Walkerton, Indiana, and educated at the universities of Montana and California.
		Subsequently, he was director of war research in the atom-bomb project at Columbia University, where his group did the initial research on separating uranium-235, the fissionable isotope, from uranium-238, the more abundant isotope.
	encarta.msn.com /encyclopedia_761571550/Harold_Urey.html (224 words)

	Harold Urey - Wikipedia, the free encyclopedia
		Harold Clayton Urey (April 29, 1893 – January 5, 1981) was a chemist whose pioneering work on isotopes earned him the Nobel Prize in Chemistry in 1934 and later led him to theories of planetary evolution.
		Urey was born in Walkerton, Indiana to Reverend Samuel Clayton Urey and Cora Rebecca Riensehl.
		Urey died at La Jolla, California, and is buried in the Fairfield Cemetery in DeKalb County, Indiana.
	en.wikipedia.org /wiki/Harold_Urey (591 words)

	Harold C. Urey Encyclopedia @ NaturalResearch.org (Natural Research) (Site not responding. Last check: )
		After briefly teaching in rural schools, Urey earned a degree in zoology from the University of Montana and a Ph.D. in chemistry, studying thermodynamics under at the University of California, Berkeley.
		At Berkeley, Urey was influenced by the work of physicist and soon joined Niels Bohr in Copenhagen to work on atomic structure at the Institute for Theoretical Physics.
		Urey Prize">H. Urey Prize, awarded for achievement in planetary sciences by the American Astronomical Society.
	www.naturalresearch.org /encyclopedia/Harold_C._Urey (533 words)

	AllRefer.com - Harold Clayton Urey (Chemistry, Biography) - Encyclopedia
		Harold Clayton Urey[yoor´E] Pronunciation Key, 1893–1981, American chemist, b.
		For his isolation of deuterium (heavy hydrogen) he received the 1934 Nobel Prize in Chemistry; he later isolated heavy isotopes of oxygen, nitrogen, carbon, and sulfur.
		During World War II, Urey took part in the research leading to the production of the atomic bomb; his special work was on methods of separating uranium isotopes and the production of heavy water.
	reference.allrefer.com /encyclopedia/U/Urey-Har.html (238 words)

	Harold Clayton Urey (Site not responding. Last check: )
		Urey won the 1934 Nobel Prize in Chemistry, and the American Chemical Society Gibbs Medal, for this discovery.
		Urey detected deuterium by its predicted spectrum in a discharge through the gas of this concentrated residue.
		Urey was a son of small town, pre-industrial America; he once told colleagues that the first time he saw an automobile was at age 17 in rural Montana.
	www.nobdatafy.com /HCU-bio.html (706 words)

	Miller-Urey experiment - Wikipedia, the free encyclopedia
		It was conducted in 1953 by Stanley L. Miller and Harold C. Urey at the University of Chicago.
		The liquid water was heated to induce evaporation, sparks were fired through the atmosphere and water vapor to simulate lightning, and then the atmosphere was cooled again so that the water could condense and trickle back into the first flask in a continuous cycle.
		At the end of one week of continuous operation, Miller and Urey observed that as much as 10-15% of the carbon within the system was now in the form of organic compounds.
	en.wikipedia.org /wiki/Miller_experiment (1399 words)

	Harold Urey Biography \| World of Microbiology and Immunology
		In 1934, Harold Urey was awarded the Nobel Prize in chemistry for his discovery of deuterium, an isotope, or species, of hydrogen in which the atoms weigh twice as much as those in ordinary hydrogen.
		Harold Clayton Urey was born in Walkerton, Indiana.
		Urey received his doctorate in 1923 for research on the calculation of heat capacities and entropies (the degree of randomness in a system) of gases, based on information obtained through the use of a spectroscope.
	www.bookrags.com /biography/harold-urey-wmi (1553 words)

	Register of Harold Clayton Urey Papers - MSS 0044
		Born in Walkerton, Indiana, on April 29, 1893, Harold Urey was the son of Samuel Clayton and Cora Rebecca (Reinohl) Urey.
		Urey himself was concerned with the safety of nuclear power and the need for a national plan to dispose of nuclear wastes.
		Photos of Urey are arranged according to the location or group he was visiting, and the date of the photo is stated in the folder title whenever possible.
	orpheus.ucsd.edu /speccoll/testing/html/mss0044a.html (3728 words)

	Harold C. Urey: Discoverer of Deuterium and Investigator of the Origin of Life, the Origin of the Planets, and the ...
		Urey’s Ph.D. in chemistry was preceded by a Bachelor of Science degree in zoology from the University of Montana and was followed by a year in Copenhagen at the Institute for Theoretical Physics, run by the renowned physicist Niels Bohr.
		Urey was deeply concerned with the danger posed by the nuclear weapons he had helped create, and became an extremely active advocate of nuclear arms control.
		Urey believed that life was common in the universe, and that these building blocks must have spontaneously come into being on the early Earth.
	www.amnh.org /education/resources/rfl/web/essaybooks/earth/p_urey.html (1090 words)

	DPS Prizes: Urey Prize
		The Harold C. Urey Prize (hereafter referred to as the Urey Prize), was established by the DPS to recognize and encourage outstanding achievements in planetary science by a young scientist.
		Candidates for the Urey Prize must not have reached their 37th birthday OR have held a recognized doctorate for no more than 6 years (whichever is later) at the end of the calendar year of the award.
		The Urey Prize will consist of a certificate and a citation, accompanied (except for a posthumous recipient) by a cash award, in an amount to be determined by the DPS Committee.
	www.aas.org /~dps/prizes_urey.html (364 words)

	Urey, Harold Clayton (Site not responding. Last check: )
		During World War II he was a member of the Manhattan Project, which produced the atomic bomb, and after the war he worked on tritium (another isotope of hydrogen, of mass 3) for use in the hydrogen bomb, but later he advocated nuclear disarmament and world government.
		Urey was born in Indiana and educated at Montana State University.
		After deuterium, Urey went on to isolate heavy isotopes of carbon, nitrogen, oxygen, and sulphur.
	www.cartage.org.lb /en/themes/biographies/mainbiographies/U/Urey/1.html (183 words)

	Harold Clayton Urey (Site not responding. Last check: )
		He was the son of Reverand Samuel Urey and Cora Reinoehl.
		He later worked on the seperation of uranium isotopes, and more recently, he has been concerned with the measurement of paleotemperatures, the origins of the planets, and chemical problems of the earth.
		Harold has won a nobel prize for his discovery of heavy hydrogen.
	home.rochester.rr.com /phsbio/hof/urey.html (190 words)

	Special for Missoulian Online - The 100 Most Influential Montanans of the Century
		Harold Urey, a 1917 graduate of the University of Montana, was one of the first participants on the Manhattan Project, which was designed to secretly make an atomic bomb during World War II.
		Besides his work on the atomic bomb, he served on a subcommittee that examined the potential of using radioactive materials as a weapon of mass poisoning in case Nazi Germany approached victory before the atomic bomb was complete.
		In 1994, Urey was honored as one of UM's distinguished alumni.
	www.missoulian.com /specials/100montanans/list/050.html (489 words)

	Urey Harold Clayton - Search Results - MSN Encarta (Site not responding. Last check: )
		Urey, Harold Clayton (1893-1981), American chemist and Nobel laureate, best known for his discovery of deuterium, or heavy hydrogen, symbol D or
		In 1931 the American physicist Harold Clayton Urey discovered the hydrogen isotope deuterium and made heavy water from it.
		The American chemist Harold Clayton Urey discovered in 1932 the presence in water of a...
	uk.encarta.msn.com /Urey_Harold_Clayton.html (118 words)

	Harold C. Urey - Biography
		Harold Clayton Urey was born in Walkerton, Indiana, on April 29, 1893, as the son of the Rev.
		Professor's Urey's early researches concerned the entropy of diatomic gases and problems of atomic structure, absorption spectra and the structure of molecules.
		Professor Urey received the Willard Gibbs Medal (American Chemical Society) in 1934; Davy Medal (Royal Society, London), 1940; Franklin Medal, 1943; Medal for Merit, 1946; Cordoza Award, 1954; Honor Scroll Award (American Institute of Chemists), 1954; Joseph Priestley Award, 1955; Alexander Hamilton Award, 1961; and the J. Lawrence Smith Award (National Academy of Sciences), 1962.
	uk.geocities.com /hertouyt/cgi-bin/urey-bio.html (648 words)

	Harold Clayton Urey (1893-1981) (Site not responding. Last check: )
		Harold Clayton Urey was born in the state of Indiana, USA, in April 29th 1893, dying in California, in January 5th 1981.
		A graduate of the University of Montana (1917), he was granted a Ph.D. in Chemistry at the University of California (1923), and specialized in atomic physics with Niels Bohr by the University of Copenhagen (1923-1924).
		Urey also devoted some time to the problem of the origin of Earth and to the hypothesis of using oxygen-18 to determine prehistoric temperatures.
	nautilus.fis.uc.pt /st2.5/scenes-e/biog/b0034.html (130 words)

	Harold C. Urey - Biography
		Harold Clayton Urey was born in Walkerton, Indiana, on April 29, 1893, as the son of the Rev. Samuel Clayton Urey and Cora Rebecca Reinoehl, and grandson of pioneers who settled in Indiana.
		Professor's Urey's early researches concerned the entropy of diatomic gases and problems of atomic structure, absorption spectra and the structure of molecules.
		Professor Urey received the Willard Gibbs Medal (American Chemical Society) in 1934; Davy Medal (Royal Society, London), 1940; Franklin Medal, 1943; Medal for Merit, 1946; Cordoza Award, 1954; Honor Scroll Award (American Institute of Chemists), 1954; Joseph Priestley Award, 1955; Alexander Hamilton Award, 1961; and the J. Lawrence Smith Award (National Academy of Sciences), 1962.
	nobelprize.org /nobel_prizes/chemistry/laureates/1934/urey-bio.html (644 words)

	Making the Modern World - Harold Urey
		Despite his profound pacifism, Urey played an important role in the development of the atomic bomb.
		He studied the relative abundance of the elements, devised methods for estimating the temperature of ancient oceans and investigated properties of Earth's early atmosphere.
		Urey's interest in the origins of life led to a series of classic experiments, performed with Stanley Miller, in 1951.
	www.makingthemodernworld.org.uk /people/BG.0079 (231 words)

	EXOBIOLOGY: An Interview with Stanley L. Miller
		In early 1950's, Harold Urey suggested that the Earth had a reducing atmosphere, since all of the outer planets in our solar system- Jupiter, Saturn, Uranus and Neptune- have this kind of atmosphere.
		Urey gave a lecture in October of 1951 when I first arrived at Chicago and suggested that someone do these experiments.
		In the early 1950s Stanley L. Miller, working in the laboratory of Harold C. Urey at the University of Chicago, did the first experiment designed to clarify the chemical reactions that occurred on the primitive earth.
	www.accessexcellence.org /WN/NM/miller.html (3621 words)

	Miller-Urey Experiment
		In 1953, Stanley Miller, along with his graduate advisor Harold Urey, tested this hypothesis by constructing an apparatus that simulated the Oparin-Haldane "early earth." When a gas mixture based on predictions of the early atmosphere was heated and given an electrical charge, organic compounds were formed (Miller, 1953; Miller and Urey, 1959).
		The apparatus Miller and Urey designed became the basis for many subsequent "spark experiments" and laid a groundwork that is still in use today.
		Even though origin-of-life research has moved beyond Miller and Urey, their experiments should be taught.
	www.ncseweb.org /icons/icon1millerurey.html (2511 words)

	HistCite - index: Harold C. Urey
		Urey HC The heat capacities and entropies of diatomic and polyatomic gases
		UREY HC; DAWSEY LH; RICE FO Urey HC; Dawsey LH; Rice FO The mechanism of homogeneous gas reactions.
		Murphy GM; Urey HC On the relative abundances of the nitrogen and oxygen isotopes (vol 41, pg 141, 1932)
	www.garfield.library.upenn.edu /histcomp/urey-hc_auth (1451 words)

	AIP International Catalog of Sources (Site not responding. Last check: )
		Harold Urey memorial symposium [sound recording] : Harold Urey, the scientist and Harold Urey, the man / 1981 February 7.
		The symposium was held at the Sumner Auditorium, Scripps Institution of Oceanography on Feb. 7, 1981.
		(Urey died on January 6, 1981.) Speakers discussing "Harold Urey, the Scientist" included: Stanley Miller, Murray Goodman, Clyde Hutchison, Karl Cohen, G. Wasserburg, Hans Suess and Samuel Epstein.
	www.aip.org /history/catalog/icos/26049.html (149 words)

	Harold Clayton Urey Winner of the 1934 Nobel Prize in Chemistry
		Harold Clayton Urey Winner of the 1934 Nobel Prize in Chemistry
		Harold Clayton Urey (Chemistry, Biographies) (submitted by Jackson)
		Harold C. Urey Biography from Encyclopedia Britannica (submitted by www.britannica.com)
	www.almaz.com /nobel/chemistry/1934a.html (113 words)

	Urey, Harold Clayton articles on Encyclopedia.com (Site not responding. Last check: )
		Harold Clayton Art Prints Choose from over 300,000 art prints and posters.
		Harold Clayton Urey books Buy books by Harold Clayton Urey Used, new, and out of print books
		Urey, Harold Clayton UREY, HAROLD CLAYTON [Urey, Harold Clayton], 1893-1981, American chemist, b.
	www.encyclopedia.com /articles/13278.html (111 words)

	HistCite - index: Harold C. Urey
		UREY HC Urey HC Some thermodynamic characteristics of hydrogen and deuterium.
		UREY HC Urey HC The distribution of electrons in the various orbits of the hydrogen atom
		UREY HC Urey HC The structure of the hydrogen molecule ion
	www.garfield.library.upenn.edu /histcomp/urey-hc_auth/index-so.html (1305 words)

	Alsos: Harold Urey and the Discovery of Deuterium
		Written fifty years after the event, this article discusses Harold Urey's discovery of deuterium, the hydrogen isotope with a mass of two.
		It chronicles prior research by others that led to that discovery and describes Urey's experiments and results.
		The article also describes the uses of deuterium and provides a summary of Urey’s scientific career, including his receipt of a Nobel Prize in Chemistry for the deuterium discovery.
	alsos.wlu.edu /information.aspx?id=1613 (88 words)

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