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Topic: Robert Van de Graaff


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In the News (Thu 2 Oct 14)

  
  Robert J. Van de Graaff - Wikipedia, the free encyclopedia
Robert Jemison van der Graaff, (December 20, 1901 – January 16, 1967) was an American physicist and instrument maker, and professor of physics at Princeton University.
Van de Graaff was born in Tuscaloosa, Alabama.
In 1929, Van de Graaff developed his first generator (producing 80,000 volts) at Princeton University; by 1933, he had constructed a much larger generator, capable of generating 7 million volts.
en.wikipedia.org /wiki/Robert_Van_de_Graaff   (378 words)

  
 Resonance Research Corporation - Science Museum Exhibits and High-Voltage Electricity Displays
Robert Van de Graaff, the inventor of the high voltage electrostatics Van de Graaff generators, was an American mechanical engineer who later switched to high energy physics and developed the modern machine named in his honor: The Van de Graaff high voltage electrostatics generator.
Robert J. Van de Graaff was born in Tuscaloosa, Alabama, in 1901.
Van de Graaff high voltage electrostatic generators are used in public schools and universities for teaching basic principles of high voltage electrostatisc charge and the laws of electrostatics.
www.resonanceresearch.com /Robert-J-Van-de-Graaff-high-voltage-electrostatic-generators.htm   (707 words)

  
 Robert Jemison Van de Graaff was born on December 20, 1901 in Tuscaloosa, Alabama   (Site not responding. Last check: 2007-11-01)
Robert Jemison Van de Graaff was born on December 20, 1901 in Tuscaloosa, Alabama
obert Jemison Van de Graaff was born on December 20, 1901 in Tuscaloosa, Alabama.
In 1936 Van de Graaff married Catherine Boyden.
tvdg10.phy.bnl.gov /vandegraaff.html   (1255 words)

  
 Article published Dec 12, 2004
Van de Graaff hung on to his ear and Alabama hung on to a 6-0 lead to beat the Vols.
The Van de Graaff boys came by their love of football honestly; their father, Adrian Van de Graaff Sr., was virtually present at the creation of the game.
Robert’s father was a prominent local attorney and judge and other Van de Graaffs and Jemisons were active in the local bar.
bama.ua.edu /~jharrell/PH106-F05/vandegraaff.htm   (2047 words)

  
 Today in Technology History - Dec 20
Robert Jemison Van de Graaff was born in Alabama on December 20, 1901.
Van de Graaff (pronounced VAN-duh-graff) graduated from the University of Alabama.
When Van de Graaff studied advanced physics in the 1920s, researchers were facing a new challenge: in order to continue investigating atoms and radiation, scientists needed more powerful streams of high-speed particles.
www.tecsoc.org /pubs/history/2001/dec20.htm   (301 words)

  
 Van de Graaff   (Site not responding. Last check: 2007-11-01)
In Van de Graaff generators, electric charge is transported to the high-voltage terminal on a rapidly moving belt of insulating material driven by a pulley mounted on the grounded end of the structure; a second pulley is enclosed within the large, spherical high- voltage terminal, as shown at left.
Van de Graaff also worked with John G. Trump, a professor of electrical engineering at MIT and with William W. Buechner, a professor of physics at MIT in an effort to achieve higher voltages, more homogeneous particle beams, and more compact designs.
Robert J. Van de Graaff died on the morning of January 16, 1967 in Boston at the age of 65.
chem.ch.huji.ac.il /~eugeniik/history/graaff.html   (2305 words)

  
 Howstuffworks "How Van de Graaff Generators Work"
Van de Graaff invented the generator to supply the high energy needed for early particle accelerators.
There are two types of Van de Graaff generators: one that uses a high-voltage power supply for charging and one that uses belts and rollers for charging.
For the Van de Graaff generator, the belt is the charged object, delivering a continuous positive charge to the sphere.
science.howstuffworks.com /vdg2.htm   (1040 words)

  
 Understanding the Van de Graaff Generator
Van de Graaff invented the Van de Graaff Generator to supply the high energy needed for early particle accelerators.
Van de Graaff Generators are described as "constant current" electrostatic devices.
Van de Graaff generators are made up of a motor, two rollers, a belt, two brush assemblies, and an output terminal (usually a metal or aluminum sphere), as shown in the figure:
www.cartage.org.lb /en/themes/Sciences/Physics/Electromagnetism/Electrostatics/VandeGraaff/Understanding/Understanding.htm   (1062 words)

  
 Generateur electrostatique Van de Graaff   (Site not responding. Last check: 2007-11-01)
Son inventeur est le Dr Robert Van de Graaff (biographie, histoire) qui cherchait a produire de l'electricite statique a tres haute tension dans les annees 1931-1933.(Brevet US 1.991.236) C'est a l'Universite de Princeton, dans le New Jersey que cet outil scientifique (Statitron) a ete conçu et realise par MM.
Van de Graaff was looking for a way of creating a direct current, high voltage power source.
Ils atteignaient une tension de l'ordre de 2 à 2.5 MV avec le sol, valeur imposante pour l'epoque.
members.aol.com /lyonelb/vdg.html   (1267 words)

  
 Technology Review: Emerging Technologies and their Impact
Robert Van de Graaff invented a high-voltage generator that helped lay the foundation for experimental particle and nuclear physics.
Van de Graaff joined MIT in 1931 and, with the support of university president Karl T. Compton, built a 13-meter-high, seven-million-volt version of the generator.
Van de Graaff remained at MIT until 1960, refusing to leave even during World War II, when his department head urged him to lend his talents to the nuclear-research effort at Los Alamos.
www.technologyreview.com /read_article.aspx?id=14313   (604 words)

  
 Earth & Sky : Radio Shows
Van de Graaff's device is a type of electrostatic generator.
Van de Graaff (Dec. 20, 1901 - Jan. 16, 1967) received his M.S. degree in mechanical engineering from the University of Alabama in 1923 and his Ph.D. in physics from Oxford University (Queen's College) in 1928.
From 1934 to 1960, Van de Graaff was an associate professor of physics at MIT.
www.earthsky.org /shows/show.php?date=20041110   (1011 words)

  
 Work against an Electric Force
The situation is therefore somewhat similar to Robert Van de Graaff's machine, except that there the rubber band overcomes electric repulsion, while here, the forces of the wind and of gravity overcome an attraction.
The way electric charge is sprayed from a high-voltage source onto the belt of the Van de Graaff generator is also at the heart of the xerographic copier or "xerox machine." In both terms, the prefix "xero-" comes from the Greek word for "dry," implying a printing process using dry ink.
Van de Graaff's was honored by having one of the craters on the far side of the Moon named for him.
www.phy6.org /stargaze/Svandgrf.htm   (1875 words)

  
 History of the Van de Graaff Generator
Designed and built by Dr. Robert J. Van de Graaff, who was a professor at MIT, this generator was originally used as a research tool in early atom-smashing and high energy X-ray experiments.
Finally, in 1931, the large Van de Graaff generator was constructed in an unused dirigible dock at Round Hill, the estate of Colonel E.H.R. Green, in South Dartmouth, Massachusetts.
The colossal Van de Graaff was dismantled and brought to the Cambridge campus of MIT.
www.cartage.org.lb /en/themes/Sciences/Physics/Electromagnetism/Electrostatics/VandeGraaff/History/History.htm   (388 words)

  
 Encyclopedia   (Site not responding. Last check: 2007-11-01)
It was developed in 1931 by the American physicist Robert Jemison Van de Graaff (1901–67).
The Van de Graaff generator is used to accelerate a beam of electrons, protons, or ions for bombarding the nuclei in a small target set in the path of the beam.
Paintings by the late Dutch painter Vincent van Gogh are shown at the Bernheim-Jeune gallery in Paris.
www.historychannel.com /encyclopedia/article.jsp?link=FWNE.fw..va006600.a   (560 words)

  
 Van de Graaff Generator, 1933: Exhibits: Institute Archives & Special Collections: MIT
Known colloquially as the “Van de Graaff Generator,” the apparatus was designed to supply high voltage to accelerate subatomic particles to very high velocities for the bombardment and study of atomic nuclei.
President Karl T. Compton brought Robert J. Van de Graaff to MIT from Princeton in 1931 to bolster the Institute's physics department and develop a much-needed facility for high-voltage research.
Reports, correspondence, photos, and other materials relating to the Van de Graaff Generator are located in the Records of the MIT President (AC 4), the Papers of Robert J. Van de Graaff (MC 45), and the Records of the High Voltage Energy Corporation (MC 153) at the MIT Institute Archives and Special Collections.
libraries.mit.edu /archives/exhibits/van-de-graaff   (416 words)

  
 Van de Graaff Robert Jemison - Search Results - MSN Encarta   (Site not responding. Last check: 2007-11-01)
Van de Graaff Robert Jemison - Search Results - MSN Encarta
Van de Graaff, Robert Jemison (1901-1967), American physicist who invented the Van de Graaff generator, a high-voltage static generator, which is a...
Van de Graaff Generator, an electrostatic machine used in nuclear physics for the generation of extremely high voltages (Electricity; Physics:...
uk.encarta.msn.com /Van_de_Graaff_Robert_Jemison.html   (126 words)

  
 SCIENCE HOBBYIST PAGE: VAN DE GRAAFF GENERATOR FAQ   (Site not responding. Last check: 2007-11-01)
A Van de Graaff machine is a mechanical-electric device which produces extremely high voltage at low, safe levels of electric current.
A: The VDG machine was invented in the 1920s by Robert Van de Graaff, an MIT physics student who was inspired by large, unexplained sparks produced by an industrial printing press.
The Van de Graaff machine is an excellent device for studying Electrostatics, the science of voltage and electric charge.
www.amasci.com /emotor/vdgdesc.html   (2859 words)

  
 Van de Graaff, Robert Jemison - HighBeam Encyclopedia   (Site not responding. Last check: 2007-11-01)
VAN DE GRAAFF, ROBERT JEMISON [Van de Graaff, Robert Jemison], 1901-67, American physicist, b.
He developed an electrostatic particle accelerator —now called a Van de Graaff generator—used in nuclear research.
Introduced in 1931, it uses the charge that accumulates from a rapidly moving belt inside an insulated hollow metal globe to produce high-voltage electrical discharges that look like lightning.
www.encyclopedia.com /doc/1E1-vandeg1ra.html   (172 words)

  
 [No title]   (Site not responding. Last check: 2007-11-01)
Robert Jemison Van de Graaff, 1901-1967, B.S. 1923, University of Alabama, B.Sc.
Van de Graaff received several honorary degrees and awards, including the 1947 Duddel Memorial Medal of the Physical Society of Great Britain and the 1966 Tom W. Bonner prize of the American Physical Society.
Van de Graaff supervised the construction of the 5 MeV electrostatic generator at Round Hill for MIT Project notes and drawings are included (box 2, folders 167-168).
www.aip.org /history/ead/mit_van_de_graaff/19990052.xml   (1005 words)

  
 BookRags: Robert van de Graaff Biography
Robert Jenison van de Graaff was born in Tuscaloosa, Alabama, on December 20, 1901.
While at Oxford, van de Graaff became interested in the difficulties of accelerating particles to high velocities for use in nuclear research.
Later in his career, van de Graaff devised methods for accelerating uranium atoms to be used in the bombardment of other uranium atoms.
www.bookrags.com /biography/robert-van-de-graaff-woi   (433 words)

  
 BookRags: Robert J. Van de Graaff Biography
Robert J. Van de Graaff invented a particle accelerator named for him that tremendously advanced research in nuclear physics.
Robert Jemison Van de Graaff was born and raised in Tuscaloosa, Alabama.
After graduation, Van de Graaff worked for the Alabama Power Company for a year as a research assistant, continuing his studies of the conversion of heat into mec.....
www.bookrags.com /biography/robert-j-van-de-graaff-wop   (251 words)

  
 Van de Graaff Electrostatic Generator
The Van de Graaff generator is the twentieth century's contribution to the lineage of static electricity.
It was conceived by Robert Van de Graaff while he was working towards a doctorate at Oxford.
The Bakken has more powerful Van de Graaff generators also, but they are used in the education programs instead of being part of the collection.
www.thebakken.org /artifacts/vandegraff.htm   (270 words)

  
 TIME.com: $90 Lightning -- Nov. 16, 1931 -- Page 1
'The significance of Dr. Van de Graaff's purchase at the 5f/ and 10^ store ribbon counter was that he had discovered how to produce a current of electricity with light-ning-like force at a cost (for a small 1,500,000-volt machine) of $90.
As Dr. Van de Graaff demonstrated his machine last week in a dark laboratory at Princeton, a soft crackling sound was heard, electricity "spilling" from the copper balls in a "corona" effect.
Significance was that this was a steady potential, available until Dr. Van de Graaff turned off his little generators and let the whizzing ribbons come to rest.
www.time.com /time/magazine/article/0,9171,742620,00.html   (615 words)

  
 Article published in Tuscaloosa News Dec 12, 2004
His football-playing brothers may have made the Van de Graaffs a household name in the Deep South, but Robert’s invention of the Van de Graaff generator made it famous worldwide—and beyond.
Somebody had hit him from behind on an ice-slick road and he stopped and he and the fellow were standing behind his car—I guess, waiting for the police—when a third car came up and hit the car that hit him and trapped him between his car and the fellow behind him.
Van de Graaff Generator is an instantly recognizable name in
bama.ua.edu /~jharrell/PH106-S06/vandegraaff.htm   (1920 words)

  
 History of the Van de Graaff Generator   (Site not responding. Last check: 2007-11-01)
All images on this page are the property of the Massachusetts Institute of Technology and may not be duplicated, altered, or reused without written permission.
This is an early Van de Graaff generator being demonstrated by Robert J.
For years, it was enclosed in a small steel structure on the Museum's property, where it was occasionally demonstrated.
www.mos.org /sln/toe/history.html   (369 words)

  
 Van De Graaff Generators &
The Van de Graaff Generator is an electrostatic generator capable of generating extremely high voltages upto around 20 million volts.
Named after its inventor Robert Jemison Van de Graaff, who was a professor at MIT.
The Van de Graaff Generator was developed around 1929 to 1931 to supply the high energies required for particle accelerators of that period.
freespace.virgin.net /paul.zimmermann/VDG/vp1.htm   (574 words)

  
 Tracking the sea-level signature of the 8.2 ka cooling event: New constraints from the Mississippi Delta   (Site not responding. Last check: 2007-11-01)
Robert J. Van de Graaff Laboratory, Utrecht University, Utrecht, Netherlands
The ever increasing need for accurate predictions of global environmental change under greenhouse conditions has sparked immense interest in an abrupt, century-scale cooling around 8200 years ago, with a focal point in the North Atlantic and with hemispheric teleconnections.
Citation: Törnqvist, T. Bick, J. González, K. van der Borg, and A. de Jong (2004), Tracking the sea-level signature of the 8.2 ka cooling event: New constraints from the Mississippi Delta, Geophys.
www.agu.org /pubs/crossref/2004/2004GL021429.shtml   (355 words)

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