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Topic: Wimshurst machine

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Electrostatic generator

Testatika

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Static electricity

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Current (electricity)

Leyden jar

	Powerlabs' Wimshurst electrostatic generator page!
		The Wimshurst machine was invented by J. Wimshurst in the 1880's and was the most famous electrostatic machine of the nineteenth century, before the Van De Graf generator came along.
		Electrostatic machines such as this one remained popular throughout the 19th and 20th century as a means of generating very high voltages which induction coils just couldn't stand due to their limited insulation.
		The final barrier for a Wimshurst machine is to make sparks that are slightly longer than the distance of all the total spacing between a third of it's disks (between the pickups and the neutralizers, assuming those are set at 60degrees from the horizontal, for maximum efficiency).
	www.powerlabs.org /wimshurst.htm (1438 words)

	The Wimshurst Machine (Site not responding. Last check: 2007-10-17)
		The Wimshurst Machine was invented by James Wimshurst (England) in 1883.
		In April 1891 I had the honour to submit to this Meeting a very useful form of experimental Influence-machine, by means of which I was able to show that almost every combination of glass and metal, and also that plain glass disks, when moved and suitably touched, were capable of producing a flow of electricity.
		In the space between the disks are fitted four vertical slips of glass, two being situated on the right-hand side of the machine and two on the left-hand.
	www.wimshurstmachine.com (796 words)

	Lateral Science - Victorian Pre-Wimshurst Influence Machine
		Wimshurst, a rather cocky fellow to my mind, remarked that perhaps a more simple method of charge transportation could be achieved using glass discs with tin-foil areas around the periphery of the discs.
		Wimshurst was visibly shaken as Hodges launched a verbal tirade of electrical engineering argument, the body of which I have previously stated.
		Wimshurst collapsed in a manner not unlike that of an unsupported sack of pig excrement.
	www.lateralscience.co.uk /VicN2/influence.html (855 words)

	A triplex Wimshurst machine (Site not responding. Last check: 2007-10-17)
		The machine can be built with a central disk with embedded sectors accessed through the edge, as in this highly efficient machine [46], designed by H. Wommelsdorf in the early 1900's, but the construction with two central disks allows the construction of a sectorless machine, as this, built by S. Klein by 2000.
		The result is that the triplex machine produces three or four times more current than a single Wimshurst machine with the same disks and speed, while two separate machines at most double the current.
		It was soon evident, however, that the sectors were too close together, as the machine was easily sparking through the disks, from one charge collector through a series of sectors to a neutralizer, and from one of the other neutralizers through another series of sectors to the other charge collector.
	www.coe.ufrj.br /~acmq/triplex.html (1448 words)

	Biggest Wimshurst Electrostatic Generator Machines
		In larger Wimshurst influence machines two, three, or more pairs of oppositely-rotating plates are mounted within a glass case to keep off the dust.
		Machines with only six or eight sectors on each plate give longer sparks, but less frequently than those that have a greater number.
		Wimshurst has designed many influence machines, from small ones with disks 2 inches across up to that at South Kensington, which has plates 7 feet in diameter.
	www.scitechantiques.com /wimshurst1 (781 words)

	Re: Building a Wimshurst Machine
		In the Wimshurst machine, the foils serve as the "charged object" for part of the cycle of rotation, and as the inductively-charged foil for another part.
		Once the Wimshurst machine has started, there are four identical functions taking place, two on each disk, and two produce positive charge while the others produce negative.
		You may have noticed that the diagonal arms of the Wimshurst machine are used as ground, even though they aren't grounded.
	www.madsci.org /posts/archives/may98/895429674.Ph.r.html (1059 words)

	Electrostatics at Home
		The Wimshurst machine, which you surely recoginize, is a source of static electricity, and this one easily gives more than 60,000 V, making a two-centimetre spark with only a few turns.
		Cut the head off of a machine screw that threads into a suitable ball (one is furnished with the electroscope) and cement or thread it into a plastic (lucite) cylinder of the desired size.
		This machine is the most convenient way to obtain the high voltages for the usual classroom electrostatic demonstrations and experiments, and is safe to use.
	www.du.edu /~jcalvert/phys/elechome.htm (8226 words)

	French Wimshurst Machine
		With its 16-inch diameter disks, this restored machine produces a 6-inch spark discharge at its output electrodes and is operated by a hand-crank mechanism.
		This machine is mounted on a 26 x 12 inch base, stands 27 inches high, and has a disk diameter of 16 inches.
		Our reproductions of Wimshurst machines are artisan-crafted according to our plans or yours, and priced according to size of disk and amount of detailing desired.
	www.arcsandsparks.com /sectored.html (163 words)

	Operation of the Wimshurst Machine (Site not responding. Last check: 2007-10-17)
		Consider that the machine is charged as in the schematic representation, shown (with cylinders instead of disks) with each half of each disk with one polarity, with boundaries at the neutralizing bars.
		At the sides of the machine, the disk sectors are charged with equal polarities, and far from the influence of the other side of the machine.
		The output current of a Wimshurst machine depends essentially on the area of the ring occupied by the disks and on the rotation speed.
	www.coe.ufrj.br /~acmq/whyhow.html (1244 words)

	Repairs PD 1998 Day 2 cont.
		One way to determine whether the machine is likely to work or not and to determine which way to turn the handle, is to position the Wimshurst machine in front of a transistor radio which is tuned 'off station' (600 to 700 AM is suitable).
		The machine does not have to be fully assembled for this test to work, thus providing a check for correct assembly when re-building the machine.
		The Wimshurst machine used in the demonstration would not produce a spark before it was dismantled, irrespective of the direction in which it was turned.
	www.rtg.wa.edu.au /repairs/whimsh~1/whimshur.htm (829 words)

	Wimshurst Machine -- from Eric Weisstein's World of Physics
		Wimshurst Machine -- from Eric Weisstein's World of Physics
		A mechanical device used prior to the invention of the van de Graaf generators to produce extremal high potentials (i.e., higher than the insulation on an induction coil can handle).
		Wimshurst machines can occasionally be found in science museums, where they are frequently broken as a result of too vigorous winding by museum patrons.
	scienceworld.wolfram.com /physics/WimshurstMachine.html (77 words)

	Machine de Wimshurst (Site not responding. Last check: 2007-10-17)
		Wimshurst James, 1832-1903, né à Londres, physicien britannique.
		Le très faible rendement des machines anciennes rend l'expérience délicate, (avec 2 machines, les amorcer, dérailler les courroies du moteur).
		Avant de décrire cette expérience très spectaculaire et facile à réaliser, quelques mots sur la présentation de-la machine de Wimshurst aux élèves : on leur fera constater qu'elle produit les mêmes effets que les bâtons électrisés, sur un électroscope par exemple.
	www-physique.u-strasbg.fr /~udp/articles/wimshurst/wimshurst.htm (2173 words)

	Wimshurst machine - Wikipedia, the free encyclopedia
		The Wimshurst machine is a historical electrostatic machine for generating high voltages, and was developed by British inventor James Wimshurst (1832 – 1903).
		It is an electrical generator with a distinctive appearance, having two large contra-rotating discs mounted in a vertical plane, and a spark gap formed by two metal spheres.
		The output of the machine is a constant current.
	en.wikipedia.org /wiki/Wimshurst_machine (226 words)

	The Wimshurst Machine (Site not responding. Last check: 2007-10-17)
		The Wimshurst machine was invented by James Wimshurst, in England, and first described it in 1883.
		The output current of the machine is proportional to the area covered by the sectors.
		The neutralizer bars are fixed to metallic rings, fixed to the upright supports of the machine by screws through their centers at the outer sides of the upright supports, or better, directly in the same axle of the disks, at the inner sides of the supports.
	www.coe.ufrj.br /~acmq/wimshurst.html (2182 words)

	Static Electrical Machines (Site not responding. Last check: 2007-10-17)
		During the latter part of the 19th century, static machines were indispensible in producing the high voltage needed for the great amount of experimentation with high-voltage vacuum tubes which was taking place.
		The sectored type of Wimshurst machine is perhaps the most well-known of the traditional induction static machines.
		The output of a sectored machine is not quite as great as that of a sectorless machine, due to some leakage of charge from the sectors.
	chem.ch.huji.ac.il /~eugeniik/instruments/archaic/static_machines.htm (761 words)

	Wimshurst Machines (Site not responding. Last check: 2007-10-17)
		Constructed according to the most time-honored methods for maximum efficiency and greatest output, this machine is handcrafted of the finest-quality materials and is capable of sparks of 10+ inches in length.
		Each machine is made of the best-quality pattern-grade mahogany, fine sanded and tung-oil finished.
		This, our finest-quality Wimshurst machine, is named in honor of one of the truly great contributors to electrical science.
	www.arcsandsparks.com /wimshurst2000.html (302 words)

	Wimshurst Static Machine (Site not responding. Last check: 2007-10-17)
		During the decade following the discovery of x-rays, the high voltage for x-ray tubes was provided by a static machine or an induction coil.
		Static machines were relatively inexpensive and simple to set up but they fell out of favor for several reasons: they could not deliver as high a current as induction coils, they were prone to mechanical failure, and their output was erratic since their operation could be affected by dust and humidity.
		This Wimshurst machine was manufactured by Baird and Tatlock of London before the discovery of x-rays.
	www.orau.org /ptp/collection/xraytubes/wimshurst.htm (312 words)

	Wimshurst Machine
		The Wimshurst Machine at the right is in the Jack Judson Collection at the Magic Lantern Collection in San Antonio, Texas.
		The catalogue notes that "the Wimshurst machine is not affected by moisture or atmospheric changes and works absolutely without changing the poles, making it desirable for X-Ray work.
		The Wimshurst machine on the left is also in the Judson Collection in San Antonio.
	physics.kenyon.edu /EarlyApparatus/Static_Electricity/Wimshurst_Machine/Wimshurst_Machine.html (446 words)

	The Wimshurst's Machine - Music for a better world - PRESS&REVIEWS
		The Wimshurst's Machine (TWM) is a project created by the musical passions of each member and by a central idea that was developed between friends and colleagues with little time to play together.
		Italy's The Wimshurst's Machine is a cross between the ambient/chillout sound of Sweetback (Sade's band members), a dreamy landscape that plays as the perfect soundtrack for a romantic art film, then topped off with a couple of adult radio friendly songs thrown in for good measure.
		Wimshurst Machine have been on my 'to do' list ever since I first met them when they won Friday Night Live (over at POP with one of the best tracks out of a night of dynamite tracks.
	www.thewimshurstsmachine.com /press.html (2714 words)

	UM Physics Demonstration (Site not responding. Last check: 2007-10-17)
		Demonstrate Wimshurst electrostatic generator with or without Leyden jars on the output to show the effect of capacitance on charge rate and energy of the spark discharge.
		If the generator does not immediately sound like it is charging (a very noticeable hissing and clicking), vigourously rub the plastic rod with the silk cloth for about 30 seconds.
		Then apply the rod parallel to and 1/4 to 1/2 inch away from the surface of the back spinning plate near the top of the machine (the side away from the Leyden Jars).
	www.physics.lsa.umich.edu /demolab/demo.asp?id=838 (245 words)

	Lateral Science - The Wimshurst Machine (Site not responding. Last check: 2007-10-17)
		It is known as an "influence machine", as no friction is used to generate charges.
		Invented by James Wimshurst in 1878, it was the culmination of years of electrostatic engineering by the likes of Bohnenburger, Toepler and (if you believe this) Glitch.
		QE2 unwisely asked me me what my machine was, although the Bish knew (apparently a family tie with Wimshurst existed) and wisely moved back to let Phil in.
	www.lateralscience.co.uk /wimshurst/wims.html (429 words)

	CD Baby: THE WIMSHURST'S MACHINE: The Alchemist (Site not responding. Last check: 2007-10-17)
		The Wimshurst's Machine is an 8 members band who plays a mix of electronic and acoustic chillout/ambient/jazz/new age music, with amazing irish voices, ideal for soundtracks or for a dreamy or sexy evening.
		This Wimshurst's Machine's first album ("A traveller who didn't ask for glory", Statue records 2004) is based on the notion that ancient explorers lived most of their lives through violent but incredible adventures.
		A man, more dead in the soul than in the body was stretched in an awkward way: his legs were trapped at the base of the machine, his arms blocked in a rope kept under tension by the movement of a giant wheel.
	www.cdbaby.com /twm2 (6863 words)

	Methernita Testatica free energy device
		This machine was constructed about 15 years ago in a commune near Bern Switzerland named Methernita and could have the answers to our energy needs.
		Unfortunately the members of the community have expressed a desire to keep the details of the device from the general public due their belief it could be used by miltary authorities to harm humanity.
		This is an energy system which relies on the self moving wimhurst electrostatic generator for the high voltage and somehow the members of this commune have found a way to extract, amplify and convert this energy to powerful, useful levels.
	www.wanttoknow.info /methernitatestatika (2630 words)

	[No title]
		The Wimshurst machine is a device for generating static electricity and was first described by James Wimshurst in 1883.
		I know of Wimshurst's machine at the Science and Industry Museum in Chicago, with seven foot glass disks, but this is non-functional.
		However, the machine was designed with 16 inch sparks in mind, so I have more improvements to make.
	research.microsoft.com /~swinder/sparks/wimshurst.aspx (539 words)

	Re: Building a Wimshurst Machine
		In the Wimsshurst machine, the foils serve as the "charged object" for part of the cycle of rotation, and as the inductively-charged foil for another part.
		For this reason, some Wimsshurst machines have a bit of fur in a particular place, and contact with the fur gives the same small initial charge, so the machine will (usually) start up with the same polarity every time.
		Once the Wimsshurst machine has started, there are four identical functions taking place, two on each disk, and two produce positive charge while the others produce negative.
	members.iinet.net.au /~mmvlawes/Wimhurst.html (1060 words)

	wimshurst
		A wimshurst machine consist of two glass (or acrylic) disk's with aluminium sectors.
		The angle from the neutralizer with the horizontal are adjustable.
		The most wimshurst machines have two leyden jars one left the other right.
	home.hetnet.nl /~doctor99/wimshurst.htm (716 words)

	The Wimshurst's Machine - Free Music Downloads - MP3 Downloads - Download.com Music
		It is easy to imagine yourself peacefully lounging in a scenic land while listening to these compositions, which use a wide array of acoustic instrumentation backed by ambient electronica.
		The Wimshurst's Machine is a project born by the music passion of each component and a mad idea, developed between friends and colleagues with little time to play together "in person".
		Born by the cooperation of The Wimshurst's Machine, John Paul Sharp (lyrics&vocals) & Dave Long of Gamma Leonis(bass).
	music.download.com /thewimshurstsmachine/3600-8502-100265869.html (809 words)

	Leyden Jar with Wimshurst machine (Site not responding. Last check: 2007-10-17)
		Electrical connections are made to the from each surface to an individual arm on the Wimshurst machine by contact bars.
		When the Leyden jars are connected to the Wimshust machine, the sparks are much more intense and less frequent than they are when the Leyden jar is not connected.
		Sparks from a Wimshurst are no longer but are much more intense when a Leyden jar is connected.
	demoroom.physics.ncsu.edu /orders/demos/541.html (137 words)

	Paul Baumann: Testatika Generator (Methernitha Group)
		Johnson was not only a researcher of electrostatic machines but was also an innovative constructor of them, and as such was keen to try any technique that made his generators more powerful than even the specialised Wommelsdorf multi-disc condenser machines.
		The fl dial at the rear of the 3kw machine is most likely to select a variety of capacitances so as to control the oscillations of the circuit, which in turn control disc rotational speed.
		This machine puts experts, which are just trained in conventional physics to a very hard test, because its mode of action is not explainable with the state of the art of officially accepted physical knowledge, or at the most only partially explainable.
	www.rexresearch.com /testatik/testart.htm (7092 words)

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