21. Physics 1936 for his discovery of cosmic radiation , for his discovery of the positron . VictorFranz Hess, carl david anderson. 1/2 of the prize, 1/2 of the prize. Austria, USA. http://www.nobel.se/physics/laureates/1936/

The Nobel Prize in Physics 1936 "for his discovery of cosmic radiation" "for his discovery of the positron" Victor Franz Hess Carl David Anderson 1/2 of the prize 1/2 of the prize Austria USA Innsbruck University Innsbruck, Austria California Institute of Technology Pasadena, CA, USA b. 1883 d. 1964 b. 1905 d. 1991 The Nobel Prize in Physics 1936 Presentation Speech Victor F. Hess Biography ... Documentary The 1936 Prize in: Physics Chemistry Physiology or Medicine Literature ... Peace Find a Laureate: SITE FEEDBACK CONTACT TELL A FRIEND Last modified March 18, 2004 The Official Web Site of The Nobel Foundation

22. Anderson, Carl David Search Biographies Bio search tips anderson, carl david Pronunciation Key. anderson, carl david , 190591, American physicist, b http://www.infoplease.com/ce5/CE002061.html

HOTWORDS CITE PRINT EMAIL in All Infoplease Almanacs Biographies Dictionary Encyclopedia Home Almanacs Atlas Dictionary ... D-Day Infoplease Tools Periodic Table Conversion Tool Perpetual Calendar Year by Year ... Site Map Also from Infoplease Search Infoplease Info search tips Search Biographies Bio search tips Encyclopedia Anderson, Carl David u rs u n] Pronunciation Key Anderson, Carl David , American physicist, b. New York City, grad. California Institute of Technology (B.S., 1927; Ph.D., 1930). Associated with the institute's physics department from 1930, he became professor in 1939. For his discovery (1932) of the positron, he shared with V. F. Hess the 1936 Nobel Prize in Physics. The muon particle was discovered in cosmic rays in 1935 by Anderson and his associate S. H. Neddermeyer and almost simultaneously by J. C. Street and E. C. Stevenson at Harvard. The Columbia Electronic Encyclopedia, Anderson, river, Canada Anderson, Dame Judith Related content from HighBeam Research on: Carl David Anderson THEY PASSED THE VIRGINIA BAR EXAM.(BUSINESS) (The Virginian Pilot) LIST OF WINNERS OF THE NOBEL PHYSICS PRIZE (United Press International) List of Nobel Prize in physics winners.

23. Carl David Anderson Winner Of The 1936 Nobel Prize In Physics carl david anderson, a Nobel Prize Laureate in Physics, at the Nobel Prize Internet Archive. carl david anderson. 1936 Nobel Laureate in Physics submitted by Davis) anderson, carl david (19051991) http://www.almaz.com/nobel/physics/1936b.html

C ARL D AVID A NDERSON 1936 Nobel Laureate in Physics for his discovery of the positron. Background September 3, 1905 - January 11, 1991 Place of birth: New York City, U.S.A Affiliation: California Institute of Technology, Pasadena, CA Book Store The Discovery of Anti-Matter : The Autobiography of Carl David Anderson, the Youngest Man to Win the Nobel Prize (Series in Popular Science , Vol 2) by Richard J. Weiss (Editor) Books about positrons Featured Internet Links Biography Prize presentation Search WWW Search The Nobel Prize Internet Archive Nobel News Links Obituary Links added by Nobel Internet Archive visitors Carl D. Anderson – Nobel Lecture (submitted by Chinnappan Baskar about Carl David Anderson (submitted by Jennifer Carl David Anderson (Physics, Biographies) (submitted by Davis) Anderson, Carl David (1905-1991) (submitted by Melisa) Back to The Nobel Prize Internet Archive Literature Peace Chemistry ... Medicine We always welcome your feedback and comments

24. CARL DAVID ANDERSON BIOGRAPHICAL MEMOIRS VOL. 73. carl david anderson. September 3, 1905January 11, 1991. BY WILLIAM H. PICKERING discovery of the positive electron, or positron, carl david anderson was awarded the http://www.nap.edu/readingroom/books/bio73h/anderson.html

BIOGRAPHICAL MEMOIRS VOL. 73 CARL DAVID ANDERSON BY WILLIAM H. PICKERING B EST KNOWN FOR HIS discovery of the positive electron, or positron, Carl David Anderson was awarded the Nobel Prize in physics in 1936 at age thirty-one. The discovery of the positron was the first of the new particles of modern physics. Electrons and protons had been known and experimented with for about forty years, and it was assumed that these were the building blocks of all matter. With the discovery of the positron, an example of anti-matter, all manner of theoretical and experimental possibilities arose. The Royal Society of London called Carl's discovery "one of the most momentous of the century." Born on September 3, 1905, in New York City, Carl was the only son of Swedish immigrant parents. His father, the senior Carl David Anderson, had been in the United States since 1896. When Carl was seven years old, the family left New York for Los Angeles, where Carl attended public schools and in 1923 entered the California Institute of Technology. Caltech had opened its doors in 1921 with Robert A. Millikan, himself a Nobel laureate, as chief executive. Together with chemist Arthur A. Noyes and astronomer George Ellery Hale, Millikan established the high standard of excellence and the small student body that today continues to characterize Caltech. Carl was an excellent student. Originally interested in electrical engineering, he changed to physics after attending a class with Professor Ike Bowen. In his junior year he was one of two students awarded the highly coveted travel prize for scholastic achievement. This prize consisted of a grant sufficient for two students to travel in Europe for six months, from March of their junior year to the following September, with an itinerary made up largely of their own choosing. Of the candidates considered for the prize, six were selected to attend a special class on the arts, history, and culture of Europe, given by John MacArthur, dean of freshmen. This was intended to help the winners plan an interesting trip. The chosen two spent most of their time visiting the prescribed round of museums and cathedrals, but they did get to meet scientists H. A. Lorentz and H. Kamerlingh-Onnes.

25. Anderson, Carl David anderson, carl david. carl david anderson. Harvey of Pasadena. (b.Sept. 3, 1905, New York, NY, USd. Jan. 11, 1991, San Marino, Calif http://www.britannica.com/nobel/micro/22_66.html

Anderson, Carl David Carl David Anderson Harvey of Pasadena (b. Sept. 3, 1905, New York, N.Y., U.S.d. Jan. 11, 1991, San Marino, Calif.), American physicist who, with Victor Francis Hess of Austria, won the Nobel Prize for Physics in 1936 for his discovery of the positron , or positive electron, the first known particle of antimatter. Anderson received his Ph.D. in 1930 from the California Institute of Technology, Pasadena, where he worked with physicist Robert Andrews Millikan . Having studied X-ray photoelectrons (electrons ejected from atoms by interaction with high-energy photons) since 1927, he began research in 1930 on gamma rays and cosmic rays. While studying cloud-chamber photographs of cosmic rays, Anderson found a number of tracks whose orientation suggested that they were caused by positively charged particlesbut particles too small to be protons. In 1932 he announced that they were caused by positrons, positively charged particles with the same mass as electrons. The claim was controversial until verified the next year by British physicist Patrick M.S. Blackett

26. Carl David Anderson Winner Of The 1936 Nobel Prize In Physics carl david anderson, a Nobel Prize Laureate in Physics, at the NobelPrize Internet Archive. carl david anderson. 1936 Nobel Laureate http://almaz.com/nobel/physics/1936b.html

C ARL D AVID A NDERSON 1936 Nobel Laureate in Physics for his discovery of the positron. Background September 3, 1905 - January 11, 1991 Place of birth: New York City, U.S.A Affiliation: California Institute of Technology, Pasadena, CA Book Store The Discovery of Anti-Matter : The Autobiography of Carl David Anderson, the Youngest Man to Win the Nobel Prize (Series in Popular Science , Vol 2) by Richard J. Weiss (Editor) Books about positrons Featured Internet Links Biography Prize presentation Search WWW Search The Nobel Prize Internet Archive Nobel News Links Obituary Links added by Nobel Internet Archive visitors Carl D. Anderson – Nobel Lecture (submitted by Chinnappan Baskar about Carl David Anderson (submitted by Jennifer Carl David Anderson (Physics, Biographies) (submitted by Davis) Anderson, Carl David (1905-1991) (submitted by Melisa) Back to The Nobel Prize Internet Archive Literature Peace Chemistry ... Medicine We always welcome your feedback and comments

27. Carl David Anderson, September 3, 1905—January 11, 1991 | By William H. Pickeri discovery of the positive electron, or positron, carl david anderson was awarded the Nobel Prize in physics in His father, the senior carl david anderson, had been in the United http://www.nap.edu/readingroom/books/biomems/canderson.html

BIOGRAPHICAL MEMOIRS National Academy of Sciences Courtesy of Institute Archives, California Institute of Technology, Pasadena Carl David Anderson By William H. Pickering BEST KNOWN FOR HIS discovery of the positive electron, or positron, Carl David Anderson was awarded the Nobel Prize in physics in 1936 at age thirty-one. The discovery of the positron was the first of the new particles of modern physics. Electrons and protons had been known and experimented with for about forty years, and it was assumed that these were the building blocks of all matter. With the discovery of the positron, an example of anti-matter, all manner of theoretical and experimental possibilities arose. The Royal Society of London called Carl's discovery "one of the most momentous of the century." Born on September 3, 1905, in New York City, Carl was the only son of Swedish immigrant parents. His father, the senior Carl David Anderson, had been in the United States since 1896. When Carl was seven years old, the family left New York for Los Angeles, where Carl attended public schools and in 1923 entered the California Institute of Technology. Caltech had opened its doors in 1921 with Robert A. Millikan, himself a Nobel laureate, as chief executive. Together with chemist Arthur A. Noyes and astronomer George Ellery Hale, Millikan established the high standard of excellence and the small student body that today continues to characterize Caltech. Carl was an excellent student. Originally interested in electrical engineering, he changed to physics after attending a class with Professor Ike Bowen. In his junior year he was one of two students awarded the highly coveted travel prize for scholastic achievement. This prize consisted of a grant sufficient for two students to travel in Europe for six months, from March of their junior year to the following September, with an itinerary made up largely of their own choosing. Of the candidates considered for the prize, six were selected to attend a special class on the arts, history, and culture of Europe, given by John MacArthur, dean of freshmen. This was intended to help the winners plan an interesting trip. The chosen two spent most of their time visiting the prescribed round of museums and cathedrals, but they did get to meet scientists H. A. Lorentz and H. Kamerlingh-Onnes.

28. Anderson, Carl David anderson, carl david (19051991). US physicist who discovered the positiveelectron (positron) in 1932; he shared the Nobel Prize for Physics 1936. http://www.cartage.org.lb/en/themes/Biographies/MainBiographies/A/Anderson/1.htm

Anderson, Carl David US physicist who discovered the positive electron (positron) in 1932; he shared the Nobel Prize for Physics 1936. His discovery of another particle, the muon, in 1937 launched elementary-particle physics. Anderson was born in New York and educated at the California Institute of Technology, where he spent his entire career. Using a modified cloud chamber of his own devising, Anderson found that positive electrons, or positrons, were present in cosmic rays, energetic particles reaching Earth from outer space. For this discovery, Anderson shared the 1936 Nobel prize with Victor Hess, the discoverer of cosmic rays. In 1937, Anderson found a new particle in cosmic rays, one with a mass between that of an electron and a proton. The new particle was first called a mesotron and then a meson muon. The muon was the first elementary particle to be discovered beyond the constituents of ordinary matter (proton, neutron, and electron).

29. Anderson, Carl David Search Biographies Bio search tips anderson, carl david Pronunciation Key. anderson, carl david , 190591, American physicist, b http://www.infoplease.com/cgi-bin/id/A0803921

HOTWORDS CITE PRINT EMAIL in All Infoplease Almanacs Biographies Dictionary Encyclopedia Home Almanacs Atlas Dictionary ... D-Day Infoplease Tools Periodic Table Conversion Tool Perpetual Calendar Year by Year ... Site Map Also from Infoplease Search Infoplease Info search tips Search Biographies Bio search tips Encyclopedia Anderson, Carl David u rs u n] Pronunciation Key Anderson, Carl David , American physicist, b. New York City, grad. California Institute of Technology (B.S., 1927; Ph.D., 1930). Associated with the institute's physics department from 1930, he became professor in 1939. For his discovery (1932) of the positron, he shared with V. F. Hess the 1936 Nobel Prize in Physics. The muon particle was discovered in cosmic rays in 1935 by Anderson and his associate S. H. Neddermeyer and almost simultaneously by J. C. Street and E. C. Stevenson at Harvard. The Columbia Electronic Encyclopedia, Anderson, river, Canada Anderson, Dame Judith Related content from HighBeam Research on: Carl David Anderson THEY PASSED THE VIRGINIA BAR EXAM.(BUSINESS) (The Virginian Pilot) LIST OF WINNERS OF THE NOBEL PHYSICS PRIZE (United Press International) List of Nobel Prize in physics winners.

30. LookSmart - Directory - Carl David Anderson YOU ARE HERE Home Sciences Physics Physicists Physicists AB anderson, carl david. carl david anderson Read about physicist http://search.looksmart.com/p/browse/us1/us317914/us55566/us330165/us331334/us33

@import url(/css/us/style.css); @import url(/css/us/searchResult1.css); Home IN the directory this category YOU ARE HERE Home Sciences Physics Physicists ... Physicists A-B Carl David Anderson - Read about physicist Carl David Anderson, who discovered the positron while studying cosmic rays. Directory Listings About Anderson, Carl David - 1936 Nobel Biography Profile of the life and accomplishments of this American scientist responsible for the discovery of the positron. Anderson, Carl David - Encyclopedia Brittanica Includes a profile and a photograph of the man who discovered the muon subatomic particle. Anderson, Carl David - Treasure Trove Biographies Supplies hyperlinks to scientific explanations of the main concepts associated with Anderson's work. Includes links to related scientists. We're always looking for ways to improve your search experience. Tell us how we're doing. Join the Zeal community and help build the "Carl David Anderson" Directory Category IN the directory this category About Us Advertise with Us Advertiser Log-in Terms of Service

31. Anderson, Carl David anderson, carl david an'dursun Pronunciation Key. anderson, carl david , 190591, American physicist, b. New York City, grad. California Institute of Technology (B.S., 1927; Ph.D. http://www.factmonster.com/cgi-bin/id/A0803921

Encyclopedia Anderson, Carl David u rs u n] Pronunciation Key Anderson, Carl David , American physicist, b. New York City, grad. California Institute of Technology (B.S., 1927; Ph.D., 1930). Associated with the institute's physics department from 1930, he became professor in 1939. For his discovery (1932) of the positron, he shared with V. F. Hess the 1936 Nobel Prize in Physics. The muon particle was discovered in cosmic rays in 1935 by Anderson and his associate S. H. Neddermeyer and almost simultaneously by J. C. Street and E. C. Stevenson at Harvard. The Columbia Electronic Encyclopedia, Anderson, river, Canada Anderson, Dame Judith Print this page Cite this page AD AD AD ADS Link to Fact Monster Add Fact Monster search to your site ... Privacy Brought to you by:

32. LookSmart - Directory - Carl David Anderson Directory Listings About. anderson, carl david 1936 Nobel Biography Profile ofthe life and accomplishments of this American scientist responsible for the http://search.looksmart.com/p/browse/us1/us317914/us53764/us968855/us569768/us11

@import url(/css/us/style.css); @import url(/css/us/searchResult1.css); Home IN the directory this category YOU ARE HERE : not available Carl David Anderson - Read about physicist Carl David Anderson, who discovered the positron while studying cosmic rays. Directory Listings About Anderson, Carl David - 1936 Nobel Biography Profile of the life and accomplishments of this American scientist responsible for the discovery of the positron. Anderson, Carl David - Encyclopedia Brittanica Includes a profile and a photograph of the man who discovered the muon subatomic particle. Anderson, Carl David - Treasure Trove Biographies Supplies hyperlinks to scientific explanations of the main concepts associated with Anderson's work. Includes links to related scientists. We're always looking for ways to improve your search experience. Tell us how we're doing. Join the Zeal community and help build the "Carl David Anderson" Directory Category IN the directory this category About Us Advertise with Us Advertiser Log-in Terms of Service

33. Anderson, Carl David. The Columbia Encyclopedia, Sixth Edition. 2001 The Columbia Encyclopedia, Sixth Edition. 2001. anderson, carl david. ( n´drs n) (KEY) , 1905–91, American physicist, b. New York City, grad. http://www.bartleby.com/65/an/AndrsonC.html

Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia Cultural Literacy World Factbook Columbia Gazetteer American Heritage Coll. Dictionary Roget's Thesauri Roget's II: Thesaurus Roget's Int'l Thesaurus Quotations Bartlett's Quotations Columbia Quotations Simpson's Quotations Respectfully Quoted English Usage Modern Usage American English Fowler's King's English Strunk's Style Mencken's Language Cambridge History The King James Bible Oxford Shakespeare Gray's Anatomy Farmer's Cookbook Post's Etiquette Bulfinch's Mythology Frazer's Golden Bough All Verse Anthologies Dickinson, E. Eliot, T.S. Frost, R. Hopkins, G.M. Keats, J. Lawrence, D.H. Masters, E.L. Sandburg, C. Sassoon, S. Whitman, W. Wordsworth, W. Yeats, W.B. All Nonfiction Harvard Classics American Essays Einstein's Relativity Grant, U.S. Roosevelt, T. Wells's History Presidential Inaugurals All Fiction Shelf of Fiction Ghost Stories Short Stories Shaw, G.B. Stein, G. Stevenson, R.L. Wells, H.G. Reference Columbia Encyclopedia PREVIOUS NEXT ... BIBLIOGRAPHIC RECORD The Columbia Encyclopedia, Sixth Edition. Anderson, Carl David

34. Anderson, Carl David. The American Heritage® Dictionary Of The English Language anderson, carl david. The American Heritage® Dictionary of the English LanguageFourth Edition. 2000. 2000. anderson, carl david. DATES 1905–1991. http://www.bartleby.com/61/87/A0288700.html

Select Search All Bartleby.com All Reference Columbia Encyclopedia World History Encyclopedia Cultural Literacy World Factbook Columbia Gazetteer American Heritage Coll. Dictionary Roget's Thesauri Roget's II: Thesaurus Roget's Int'l Thesaurus Quotations Bartlett's Quotations Columbia Quotations Simpson's Quotations Respectfully Quoted English Usage Modern Usage American English Fowler's King's English Strunk's Style Mencken's Language Cambridge History The King James Bible Oxford Shakespeare Gray's Anatomy Farmer's Cookbook Post's Etiquette Bulfinch's Mythology Frazer's Golden Bough All Verse Anthologies Dickinson, E. Eliot, T.S. Frost, R. Hopkins, G.M. Keats, J. Lawrence, D.H. Masters, E.L. Sandburg, C. Sassoon, S. Whitman, W. Wordsworth, W. Yeats, W.B. All Nonfiction Harvard Classics American Essays Einstein's Relativity Grant, U.S. Roosevelt, T. Wells's History Presidential Inaugurals All Fiction Shelf of Fiction Ghost Stories Short Stories Shaw, G.B. Stein, G. Stevenson, R.L. Wells, H.G. Reference American Heritage Dictionary Anderson ... BIBLIOGRAPHIC RECORD The American Heritage Dictionary of the English Language: Fourth Edition.

35. Anderson, Carl David (1905-1991), Physicien Américain D'origine Suédoise Né à NewYork, anderson étudie à l Institut de technologie http://isimabomba.free.fr/biographies/chimistes/anderson.htm

Carl David Anderson (1905-1991) P N Yukawa Hideki LISTE HOME

36. MSN Encarta - Anderson, Carl David Translate this page anderson, carl david. anderson, carl david (1905-1991), physicien américaind’origine suédoise. Médias. Plus de résultats pour anderson, carl david, http://fr.encarta.msn.com/encyclopedia_761569228/Anderson_Carl_David.html

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37. Anderson, Carl David carl david anderson. (b. Sept. 3, 1905, New York, NY, USd. Jan. 11,1991, San Marino, Calif.), American physicist who, with Victor http://www.phy.bg.ac.yu/web_projects/giants/anderson.html

Carl David Anderson (b. Sept. 3, 1905, New York, N.Y., U.S.d. Jan. 11, 1991, San Marino, Calif.), American physicist who, with Victor Francis Hess of Austria, won the Nobel Prize for Physics in 1936 for his discovery of the positron, or positive electron, the first known particle of antimatter. Anderson received his Ph.D. in 1930 from the California Institute of Technology, Pasadena, where he spent his entire career, becoming professor emeritus in 1976. Having studied X-ray photoelectrons (electrons ejected from atoms by interaction with high-energy photons) since 1927, he began research in 1930 on gamma rays and cosmic rays, utilizing the magnetic cloud chamber. In 1932 Anderson discovered the positron in the course of cosmic-ray interaction studies and one year later succeeded in producing positrons by gamma irradiation. In 1936 he participated in the discovery of the muon, an elementary particle about 207 times as massive as the electron.

38. Anderson, Carl David anderson, carl david. (19051991). Americký fyzik, který spolu sVictorem Francisem Hessem z Rakouska obdržel v roce 1936 Nobelovu http://www.aldebaran.cz/famous/people/Anderson_C_D.html

Anderson, Carl David Americký fyzik, který spolu s Victorem Francisem Hessem z Rakouska obdržel v roce 1936 Nobelovu cenu za objev pozitronu (kladného elektronu), první známé èástice antihmoty. Anderson získal titul Ph.D. v roce 1930 na Kalifornském technologickém institutu v Pasadenì, kde pracoval s fyzikem Robertem Andrewsem Millicanem . Od roku 1927 studovali rentgenové fotoelektrony (uvolòují se pøi srážkách atomù s vysoce energetickými fotony), v roce 1930 zaèali zkoumat kosmické a gama záøení. Anderson v mlžné komoøe vyfotografoval kosmické paprsky a pøi studiu takto vzniklých fotografií objevil množství stop, z jejichž polohy vyplývalo, že by mohly vzniknout pùsobením kladnì nabitých èástic - ovšem èástic mnohem menších než protony. V roce 1932 uvedl, že stopy jsou zpùsobeny pozitrony, což jsou kladnì nabité èástice mající stejnou hmotnost jako elektrony. Toto kontroverzní tvrzení bylo v roce 1933 ovìøeno britským fyzikem P. M. S. Blackettem a jeho italským kolegou G. Occhialinim. V roce 1936 Anderson objevil mí-mezon, neboli mion, vnitroatomární èásteèku 207 krát t잚í než elektron. Nejdøíve myslel, že nalezl mezon (èástici, která váže proton a neutron dohromady v atomovém jádøe) pøedpovìzený japonským fyzikem

39. Carl David Anderson [Pictures And Photos Of] carl david anderson. carl david anderson Picture, Photo, Photograph; young ;fullface ; suit; anderson C A1a. Item ID anderson C A1a. carl david anderson. http://www.aip.org/history/esva/catalog/esva/Anderson_David.html

A larger image of any photo may be purchased. Click on an image to place an order. For more information visit our home page Carl David Anderson Description young ; full-face ; suit Item ID Anderson C A1a Carl David Anderson Description middle age ; full-face ; suit ; eyeglasses ; at 10th Annual International Conference of High Energy Physics, University of Rochester, August 25-September 1, 1960 Item ID Anderson C A2 Carl David Anderson, Robert Andrews Millikan, Seth H. Neddermyer Description L-R: Anderson, Millikan, Neddermyer ; hat ; coat ; standing ; talking ; outdoors ; at the summit of Pikes Peak Item ID Anderson C C2 Carl David Anderson Description First image of a positron track Item ID Anderson C F2 Carl David Anderson Description young ; standing ; equipment ; control panel for cloud chamber in trailer on Pikes Peak Item ID Anderson C F3 Carl David Anderson Description Andersons cloud chamber and magnet ; equipment ; laboratory Item ID Anderson C F4 Carl David Anderson Description young ; suit ; inspecting equipment Item ID Anderson C F5 Carl David Anderson Description middle age, three-quarter view, eyglasses, suit, talking

40. Physics Today October 2000 The Discovery of Antimatter The Autobiography of carl david anderson,the Youngest Man to Win the Nobel Prize. Edited by Richard http://www.aip.org/pt/vol-53/iss-10/p81.html

Back to Table of Contents October Books: Principles of Optics: Electromagnetic Theory of Propagation, Interference and Diffraction of Light Allen's Astrophysical Quantities Voodoo Science: The Road from Foolishness to Fraud Supersymmetry: Squarks, Photinos, and the Unveiling of the Ultimate Laws of Nature ... New Books Site Index Physics Today Home Page Current Issue Past Contents Job Ads Upcoming Meetings Buyer's Guide About Physics Today Contact Us Advertising Information Print Ad Rates and Specs Online Ad Rates and Specs Advertiser Index Product Information Information Exchange The Discovery of Anti-matter: The Autobiography of Carl David Anderson, the Youngest Man to Win the Nobel Prize Edited by Richard J. Weiss World Scientific, River Edge, N.J., 1999. 144 pp. $28.00 hc ISBN 981-02-3680-8 Anderson began his long career at Caltech as an undergraduate. Then came his PhD thesis on photoelectrons produced by x rays, under the nominal direction of Robert Millikan. ("For this I thanked him," Anderson wrote, "but not once during the three years of my graduate thesis work did he visit my laboratory or discuss the work with me.") Then came postdoctoral work, again, loosely supervised by Millikan, during which Anderson built and ran the Caltech Magnet Cloud Chamber. For this project, Anderson built a large vertical cloud chamber and a heavy air-core magnet that produced a field of 25 kilogauss. When he first put the unwieldy apparatus, resembling an "obese pig," into operation, Anderson obtained "dramatic and completely unexpected" results: approximately equal numbers of positive and negative particles where only electrons were expected.

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