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	History of the Van de Graaff Generator (Site not responding. Last check: 2007-11-02)
		The generator was generously donated to the Museum by the Massachusetts Institute of Technology.
		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.mos.org /sln/toe/history.html (369 words)

	The Van de Graaff Generator
		The electrostatic machine known as the Van de Graaff generator was invented by Robert J. Van de Graaff, in the USA, by 1929, with the objective of generating high voltages for experiments in nuclear physics.
		After the initial experiments with generators operating in air, high-power Van de Graaff generators were built, operating in tanks of compressed air, and later other gases, achieving several megavolts of output voltage and much higher output current than would be possible in the basic machine [p98].
		The Van de Graaff generator is common in a variety of tabletop models for demonstrations and experiments with electrostatics, usually in unipolar configuration.
	www.coe.ufrj.br /~acmq/myvdg.html (2723 words)

	Howstuffworks "How Van de Graaff Generators Work"
		Van de Graaff generators are described as "constant current" electrostatic devices.
		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.
	www.howstuffworks.com /vdg2.htm (1069 words)

	Science Connection - Van De Graaf Generator (Site not responding. Last check: 2007-11-02)
		A device designed to generate large sparks of static electricity was produced in the 1930s by Robert van de Graaf, an American physicist.
		The electrode is held 3 to 4 inches from the dome of the generator (it is important to remember to ground the electrode to the binding post on the base of the generator to avoid unnecessary shocks!).
		Be sure to use the discharge electrode to remove the charge on the Van de Graaf before the person releases his/her hands.
	student.biology.arizona.edu /sciconn/vandegraff/VDG.html (1083 words)

	RTFTechnologies Van De Graaf Generator
		The negative charge is carried to the top of the generator where it is repelled by the negatively charged top roller onto the top brush.
		Due to shell theory, electric charge is distributed on the outside of a conducting shell, therefore the inside of a sphere on a VDG generator has no electrostatic potential.
		This principle allows the charge to increase on the shell of the VDG until it is limited by inducing ionization in the air.
	www.rtftechnologies.org /physics/vandegraaf.htm (974 words)

	RTFTechnologies Particle Accelerator
		Power is provided by a Van de Graaf generator or Cockroft Walton multiplier; electrons are transferred to the sphere until the charge becomes sufficient to ionize air and the charge jumps between the sphere and the discharge terminal.
		This Van De Graaf generator was built for testing the particle accelerator and for other electrostatic experiments.
		The cathode assembly is the source of the electrons that are being accelerated and is connected to the van de graaf generator's discharge terminal.
	www.rtftechnologies.org /physics/linac.htm (1696 words)

	Electrostatic Generators
		The Van de Graaf generator can develop potential energy of as high as 400,000 volts, and it will develop sparks up to 15 inches (38 centimeters) in length.
		The Van de Graaff generator is powered by a high speed electric motor.
		When you take a fluorescent bulb and bring it near a Van de Graaf generator, the charges excite the atoms inside the bulb, cause it to glow--even if the bulb is not plugged in.
	members.tripod.com /jaredmettee/electrostaticgenerators.htm (443 words)

	Aerosol Operation Crimes & Cover Up
		This method relies upon the use of a Van de Graaf generator of a rated voltage capacity, along with the measurement of the maximum spark length gap that can be achieved.
		The required input into the model is the rating of the Van de Graaf generator in volts, the maximum measured spark length in inches and the elevation of the station above sea level.
		Incidentally, the ozone generator on this filter is not being used as observations indicate that it may have a negative impact upon some plant species.
	www.carnicom.com /elf33.htm (1537 words)

	Van de Graaff generator - Wikipedia, the free encyclopedia
		A Van de Graaf generator is an electrostatic machine which uses a moving belt to accumulate very high voltages on a hollow metal globe.
		This allowed the generation of heavy ion beams of several tens of megaelectronvolts, sufficient to study light ion direct nuclear reactions.
		Van de Graaff's huge machine at Museum of Science
	en.wikipedia.org /wiki/Van_de_Graaff_generator (1429 words)

	Interactive Lecture Demonstration 5
		The Van de Graaf operates by transferring charge via a belt from its grounded base to a metal brush located in the center of the dome.
		Using the charge you calculated for the Van de Graaf, calculate the magnitude of the electric field at the surface of the dome.
		When a thumbtack is taped to the side of the Van de Graaf, the sparks will tend to happen near the thumbtack.
	courses.ncssm.edu /physics/ILD/vdg.htm (502 words)

	The Science House -Van de Graaf Demonstrations
		To determine if your Van de Graaff generator develops a positive or negative charge, the easiest thing to do is to rub a balloon on your hair or shirt to develop a net negative charge on the balloon, and then throw the balloon at the generator while it is charged.
		When the generator is turned on, the pie pans lift off one at a time and fall to the sides.
		A small balloon attached to the generator by a string taped to the globe will be charged to the same sign as the globe of the generator.
	www.science-house.org /learn/vdgraaf.html (2811 words)

	Van der Graaf Generator and Peter Hammill
		Van der Graaf Generator is now a trio consisting of the three surviving members of the original 1968 formation.
		In the early part of 1971 Van der Graaf Generator embarked on a tour of the UK with Lindisfarne and Genesis, fellow Charisma Records artists.
		During 1972 Van der Graaf Generator toured extensively in Italy, had a Number One with Pawn Hearts and appeared twice in Ciao 2001 magazine, firstly in the 27th February 1972 edition and then later in June 1972.
	www.vandergraafgenerator.co.uk (2493 words)

	Science Center, Van de Graaff Generator
		Though startling, discharges from the Van de Graaff do not represent a serious shock hazard since the currents attainable are so small.
		Then they are repelled by the charge on the Van de Graaff and fly off.
		The plastic bowl is attached to the Van de Graaff dome with masking tape so that it doesn't fly off.
	www.simplot.com /education_council/van_de_graaff_generator.cfm (226 words)

	Phun Physics - Demonstrations
		The Van de Graaf generator is shown to the audience and how it works is discussed.
		In general, a material is either a conductor or an insulator.
		Since the generator is negatively charged and the demonstrator's hand is positively charged, the charges on the generator are attracted to the demonstrator's hand.
	phun.physics.virginia.edu /demos/vandegraaf.html (980 words)

	Chapter 2: Electromagnetism
		The shaft of the motor can be left bare, but the generator will work a little better if it is made fatter by wrapping tape around it, or (better) putting a plastic rod with a hole in the center onto the shaft to act as a pulley for the rubber band.
		To use our generator to power the Franklin's Bells we built in the previous section of the book, clip the bottom brush wire to one "bell", and attach a wire to the top of the generator, connecting it to the other "bell".
		The high voltage source can be the Van de Graaff generator, or just a couple square feet of aluminum foil pressed against the front of your television set, as we did in earlier projects.
	www.scitoys.com /scitoys/scitoys/electro/electro6.html (3420 words)

	Electrostatic discharge needle (Site not responding. Last check: 2007-11-02)
		DESCRIPTION: A Van de Graaf generator is made to discharge repeatedly to a large radius spherical conductor.
		When a smaller radius spherical conductor at the same potential is brought close to the charged dome of the Van de Graaf it will "steal" the electric field from the larger sphere at a more rapid rate even though they are at the same potential.
		A needle is connected to the Van de Graaf and causes a continuous discharge so that no electric field can build up.
	www.physics.brown.edu /physics/demopages/Demo/em/demo/5b3035.htm (162 words)

	Van der Graaf Generator - Wikipedia, the free encyclopedia
		Van der Graaf Generator were a seminal 1970s English progressive rock band.
		The signature VdGG sound was a combination of Peter Hammill's distinctive and dynamic voice and David Jackson's electronically-treated saxophones, generally playing over thick chordal keyboard parts (such as Hammond organ and/or clavinet).
		Van der Graaf Generator albums tended to be darker in atmosphere than many of their prog-rock peers (a trait they shared with King Crimson, whose guitarist Robert Fripp guested on two of their albums), and guitar solos were an exception rather than a rule.
	en.wikipedia.org /wiki/Van_der_Graaf_Generator (1548 words)

	Fundamental Quantities - Length (Site not responding. Last check: 2007-11-02)
		Van de Graaff generator: A motorized rubber belt carries charge up to the metallic sphere.
		Using the strong field caused by the high voltage, hair can be made to stand on end; sharply pointed pinwheels will revolve; a string wig can be made to "float" of the top of the generator, and light can be generated from a discharge through a gas at low pressure.
		Van de Graaff generator, electric plume, electric whirl and insulation platform.
	physics.indiana.edu /~demos/demos/D2-2.htm (105 words)

	SCIENCE HOBBYIST PAGE: VAN DE GRAAFF GENERATOR FAQ
		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.
	amasci.com /emotor/vdgdesc.html (2859 words)

	Van de Graaff Details (Site not responding. Last check: 2007-11-02)
		I am seeking information on details of the operation of a Van De Graaf generator, I posted a Usenet on sci.physics which has more detail.
		If the material constants of the belt all that matter then if I could get a different material could I reverse the polarity (in principle It would be nice to have these answers in my back pocket when I run through some electricity demos for a demanding audience of 5th graders.
		Paul ------------------------------------------------ Answer: There is a good description of van de Graaf generators in "The Encyclopedia of Physics" edited by Lerner and Trigg.
	www.newton.dep.anl.gov /askasci/phy99/phy99386.htm (236 words)

	Van de Graaff Generators in the Classroom
		The generator uses a Teflon pulley at the lower end of the machine, attached to an electric motor.
		The air between the collector experiences dielectric breakdown and the generator discharges the accumulated static charge in the form of a spark.
		Keep the generator at a safe distance from the outlet where you plan to plug it in.
	hypertextbook.com /eworld/vdg.shtml (1624 words)

	Static Electricity, Electrostatics
		The discs are supported with two upright posts and rotate in opposite directions with a hand crank, producing substantial opposite charges which are deposited in the capacitors and on the metal electrodes.
		When near an active Van de Graaf Generator, the tiny conductive balls inside begin to bounce up and down.
		The Van de Graaf builds up a charge by induction as electrons are transferred from the ceiling to the floor.
	amazing1.com /static_electricity.htm (479 words)

	The Van de Graaff Generator. (Site not responding. Last check: 2007-11-02)
		The Van de Graaff generator makes use of the principle that if a charged conductor is brought into internal contact with a second hollow conductor, all of its charge transfers to the hollow conductor no matter how high the potential of the latter may be.
		Referring to the schematic of the Van de Graaff generator shown on the left, A is a hollow spherical conductor supported on an insulating hollow column B.
		To test the suitability of a material for a Van de Graaf generator belt, see if any current passses through it when a high voltage source (eg Neon transformer) is applied.
	www.hills2.u-net.com /hvhome/vdg.htm (439 words)

	United Nuclear- Van de Graaf Generators
		Generate over 1/2 million volts to produce crashing lightning bolts and perform fantastic electrostatic experiments on an incredible and spectacular scale!
		These huge generators are ideal for large auditorium or classroom science demonstrations.
		The general rule of thumb for voltage output is 70,000 x sphere radius.
	www.unitednuclear.com /vande.htm (411 words)

	Fast 'n' Bulbous Reviews: Van Der Graaf Generator
		Van Der Graaf Generator was an enigma from the start, and remain just as mysterious over 35 years later.
		At the peak of the punk era, when the bloated circus road shows of Pink Floyd, Yes and Genesis were dismissed by punkers as irrelevant, Johnny Rotten famously gave props to Van Der Graaf singer Peter Hammill during a radio show.
		When other so-called “progressive” bands were polishing their schtick into static performances, Van Der Graaf Generator embodied that restless, questing spirit that led to constant change.
	www.fastnbulbous.com /vandergraaf.htm (567 words)

	Van De Graaf Cartoons
		Van De Graaf cartoon 1 - catalog reference cga0241
		Related topics: teachers, school trip, school trips, school excursion, school excursions, van de graaf, van de graaf generator, fun, funny, electricity, static electricity, static, static charge, static charges, mane, manes, lion's mane, lions' manes, lion, lions, lion cub,
		Copyright in this image is owned by the original artist, rights to reproduce or use the image may be obtained from www.CartoonStock.com.
	www.cartoonstock.com /directory/v/van_de_graaf.asp (145 words)

	Van de Graaf generator?
		Part of the string would stick to the generator, but some part of the string also seem to repell and float in air.
		The van de graf creates a huge electric field with points away from the generator.
		Materials that are conductors allow the electrons to move around inside the material, which allow them to react with the generator.
	www.physicsforums.com /showthread.php?p=1106897#post1106897 (1076 words)

	Van de Graaf Generator (Site not responding. Last check: 2007-11-02)
		Here, this project is called a Van de Graaf generator, which was developed in 1931 by Robert J. Van de Graaf.
		This generator I made has no PVC enclosing the rubber band and was simple to adjust.
		The average spark length from this generator is about 2 to 3 mm long.
	www.electronixandmore.com /project/6.html (200 words)

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