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	Eco - Reviews: Humanitas review of "Foucault's Pendulum"
		Foucault's Pendulum will almost certainly achieve recognition as well, for it is a complex artifact of Eco's postmodern aesthetic at work in a traditional literary form: in this case like his first novel, the detective thriller.
		The poetry of the pendulum is the poetry of Eco's novel, and of history itself.
		Belbo is killed, magnificently, symbolically, hung by the wire of the pendulum.
	www.themodernword.com /eco/eco_humanitas90.html (1632 words)

	Foucault pendulum - Wikipedia, the free encyclopedia
		Foucault pendulum at the Musée des arts et métiers (Paris); pegs are placed around and are knocked down as the pendulum swing plane veers.
		The Foucault pendulum that hangs in the rotunda of the Lexington Public Library in Lexington, Kentucky in the United States is the largest ceiling clock in the world.
		The origin of the force that is involved in the precession of the Foucault pendulum with respect to the fixed stars is the centripetal force that keeps objects on the Earth's surface moving in circular paths.
	en.wikipedia.org /wiki/Foucault_pendulum (2780 words)

	Foucault's Pendulum - Wikipedia, the free encyclopedia
		Foucault's Pendulum (original title: Il pendolo di Foucault) is a novel by Italian novelist and philosopher Umberto Eco.
		Foucault's Pendulum is divided into ten segments represented by the ten Sefiroth.
		After many years of meeting at different places at distinct intervals, where the cells pass on their part of the Plan to the next one, completing it piece by piece like a puzzle, they are to reunite and rediscover the location of the umbilicus to finally exploit the telluric currents and take over the world.
	en.wikipedia.org /wiki/Foucault's_Pendulum_(book) (2531 words)

	Foucault's Pendulum
		This motion is anticlockwise in the Southern Hemisphere, and clockwise in the Northern Hemisphere.
		In October 1995, the original Foucault Pendulum was reinstalled in the Pantheon, using the original lead-coated brass ball.
		The main problems involved in making a Foucault Pendulum are starting the ball in a swing that passes through the true centre point of the swing, keeping the ball in that "true" swing (and not going into an elliptical swing), and pumping energy into the swing so that it does not die down.
	www.abc.net.au /surf/pendulum/pendulum.htm (3118 words)

	Léon Foucault: The invention of Foucault Pendulum
		In 1851, Léon Foucault, A French physicist, demonstrated the rotation of the Earth on its axis by his new invented Foucault pendulum, or Foucault's pendulum, named after him, by suspending a 67-metre wire from the dome of the Panthéon in Paris.
		Foucault first pendulums of this type, consisted of a 28-kilogram (62-pound) iron ball suspended from the dome of the Panthéon in Paris by a steel wire 67 m (220 feet) long and kept in motion by a mechanism.
		The rate of rotation of a Foucault pendulum can be stated mathematically as equal to the rate of rotation of the Earth times the sine of the number of degrees of latitude.
	www.juliantrubin.com /bigten/foucaultpendulum.html (804 words)

	Foucault Pendulum (Site not responding. Last check: 2007-10-26)
		If we were gathered around a pendulum at one of the earth's poles, it would seem to us that the pendulum was gradually changing its direction, clockwise at the north pole and counterclockwise at the south pole.
		A device is attached to the pendulum wire above the ceiling which allows a beam of light to reach a photo-electric cell at the instant the pendulum passes the center of its swing.
		Since Foucault's famous experiment, several other proofs of the spinning of the earth have been developed but none are so simple or so dramatic as the Foucault pendulum.
	www.griffithobs.org /exhibits/Pendulum/pendulum.html (1689 words)

	The Foucalt Pendulum
		In 1851, Jean-Bernard-Leon Foucault suspended a 67 metre, 28 kilogram pendulum from the dome of the Pantheon in Paris.
		The same effect that causes a pendulum to appear to veer slightly to the left (in the Southern hemisphere) is also responsible for the apparent motion of the major ocean currents.
		The Foucault Pendulum at the School of Physics of The University of New South Wales is a "hands-on" version.
	phys.unsw.edu.au /PHYSICS_!/FOUCAULT_PENDULUM/foucault_pendulum.html (1520 words)

	Lexington Public Library - Ceiling Clock & Foucault Pendulum (Site not responding. Last check: 2007-10-26)
		The Foucault pendulum was the first demonstration of the Earth’s rotation that did not rely on astronomical observation.
		A Foucault pendulum placed in between the pole and the equator is affected by both twisting and travelling.
		Because air resistance would stop the pendulum’s motion, magnets at the top gently pull the pendulum to keep it moving, and the pendulum is suspended in a way that allows it to swing freely, regardless of the building’s movement.
	www.lexpublib.org /pendulum/pendulum.cfm (464 words)

	The Foucault pendulum of the "arts et métiers" museum from Paris
		The Foucault's pendulum which was exhibited during the International exhibition of Paris in 1855, is now in the chorus of the church "Saint Martin des champs" in Paris.
		The apparent movement of the pendulum occurs in the direction of the needles of a watch in the northern hemisphere and the contrary direction in the southern hemisphere.
		The period of the pendulum is independent of the mass of the sphere.
	visite.artsetmetiers.free.fr /site_anglais/pendulum_museum_a.html (691 words)

	Encyclopedia Smithsonian: Foucault Pendulum
		The Foucault pendulum which was displayed for many years in the Smithsonian's National Museum of American History was removed in late 1998 to make room for the Star-Spangled Banner Preservation Project and there are no current plans to reinstall it.
		For a pendulum to easily demonstrate the Foucault effect, it should have as long a cable as possible (this one is 52 feet) and a heavy symmetrical bob (this one is hollow brass, weighing about 240 pounds).
		When the pendulum cable reaches a particular point in its swing, it is detected by an electronic device and the magnet is turned on at just the right time to give the collar (and thus the cable and the bob) a little "kick" in the exact direction of its natural swing.
	www.si.edu /resource/faq/nmah/pendulum.htm (1054 words)

	The Foucalt Pendulum
		In 1851, Jean-Bernard-Leon Foucault suspended a 67 metre, 28 kilogram pendulum from the dome of the Pantheon in Paris.
		The same effect that causes a pendulum to appear to veer slightly to the left (in the Southern hemisphere) is also responsible for the apparent motion of the major ocean currents.
		The Foucault Pendulum at the School of Physics of The University of New South Wales is a "hands-on" version.
	www.physclips.unsw.edu.au /jw/foucault_pendulum.html (1519 words)

	Indiana State Museum (Site not responding. Last check: 2007-10-26)
		The pendulum in the Indiana State Museum reproduces the famous experiment first performed in Paris in 1851 by Jean Bernard Leon Foucault, (pronounced Foo–Koe) a French astronomer and physicist.
		Foucault is remembered as the first man to demonstrate the rotation of the earth without using anything outside of the Earth, such as the sun or stars, as a point of reference.
		Since air resistance would normally stop the pendulum after a few hours, an iron collar is installed on the wire near the top of the dome where the pendulum hangs.
	www.in.gov /ism/MuseumExhibits/pendulum.asp (716 words)

	Untitled Document
		The rotation of the plane of oscillation of the Foucault pendulum is the most immediate and convincing evidence that the earth turns on its axis.
		First, replacing the energy lost (mostly due to wind resistance) so that the pendulum continues to swing without "dying down." If this is not done, for a pendulum of ordinary size, the swing comes to a stop before the earth has had time to rotate significantly, and the evidence for the rotation is lost.
		The pendulum resonance is narrow, perhaps 0.0005 Hz for a frequency of 0.5 Hz.
	www.sas.org /E-Bulletin/2002-04-26/handsOnPhys/body.html (2974 words)

	Foucault pendulum - Search Results - MSN Encarta
		Foucault Pendulum, type of pendulum that demonstrates the rotation of the earth.
		While Eco’s theoretical work in semiotics has influenced scholarship, it is as a columnist for Italian newspapers and magazines and as a fiction...
		Pendulums used in various types of scientific instruments include the bifilar pendulum, the Foucault pendulum, and the torsion pendulum.
	encarta.msn.com /Foucault+pendulum.html (120 words)

	Historic Artifacts: Buhl Planetarium and Institute of Popular Science
		The Foucault Pendulum provides a classic demonstration that the Earth rotates on its axis, at The Buhl Planetarium and Institute of Popular Science which, beginning on 2003 February 15, is being utilized by the Children's Museum of Pittsburgh.
		The Foucault Pendulum was unveiled, with the dedication of the Buhl Planetarium building, on 1939 October 24.
		The Siderostat, or "Sidereal Coelostat" arrangement, was designed in the mid-nineteenth century by the famous French Scientist, Jean Leon Foucault(who also invented the Foucault Pendulum, which presents the classic demonstration of the Earth's rotation on its axis); Foucault was a sickly man and died before he had the chance to constuct a Siderostat-type telescope.
	buhlplanetarium2.tripod.com /Buhlassets.htm (1475 words)

	Foucault Pendulum (Site not responding. Last check: 2007-10-26)
		It describes the dependency of the angular velocity of the pendulums plane on the fixed angular velocity of the Earth and the geographical latitude.
		Move the pendulum around on the Earths surface to learn about the dependency of the pendulums swinging plane on the geographical latitude.
		Place the pendulum at the north pole (its initial position) and measure the rotation periode of the virtual Earth.
	mats.gmd.de /~skaley/vpa/foucault/foucault.html (473 words)

	South Pole Foucault Pendulum
		A Foucault Pendulum at the South Pole was determined to have a period of 24 hours, ± 50 minutes.
		It was decided to build the pendulum in the stairwell of the new station that was under construction, out of the way of traffic, out of the wind and ice and other elements.
		Since the pendulum’s period is independent of the weight of the bob this experiment was performed with a variety of weights until one was found that gave consistent results.
	www.phys-astro.sonoma.edu /people/students/baker/SouthPoleFoucault.html (1306 words)

	Decrypting the Eclipse (Site not responding. Last check: 2007-10-26)
		A scientific tour de force, Foucault's demonstration forever attached his name both to the effect itself (the Foucault effect) and to the universal joint pendulum that freely swings and rotates at the same time (the Foucault pendulum).
		To an observer in a windowless room, the rotation that accompanies the swing is a kind of optical illusion: the pendulum is not turning, instead the Earth is actually rotating under the pendulum.
		Foucault's dramatic proof at the World's Fair is considered to be the first non-astronomical proof of the Earth's rotation.
	science.nasa.gov /newhome/headlines/ast06aug99_1.htm (2847 words)

	Foucault's Pendulum by Umberto Eco
		The plot of Foucault's Pendulum made more sense on a second reading once I knew something about the history of the Templars and the mythology surrounding them.
		But the important thing is not finding, it is the seeking, it is the devotion with which one spins the wheel of the prayer and scripture, discovering the truth little by little.
		In this context, Faucault's Pendulum may have connections to its Italian readers that would be missed by a reader in the United States.
	www.bearcave.com /bookrev/foucault.html (2191 words)

	Science NetLinks: Foucault's Pendulum
		Have students view the animation of a Foucault pendulum, on Science's 10 Most Beautiful Experiments website (the animation is at the bottom of the page).
		In this part of the lesson, students will explore the About Foucault Pendulums website, from the California Academy of Sciences, to learn how the scientist, Jean Foucault, was able to prove that the earth rotates by building and observing the motion of a pendulum.
		A Foucault pendulum is similar to a simple pendulum, but its motion is not limited to a plane.
	www.sciencenetlinks.com /Lessons.cfm?DocID=180 (1319 words)

	The Pendulum
		First exhibited in 1851 at the World’s Fair in Paris, the Foucault Pendulum (named after Jean Bernard Leon Foucault, the French physicist who invented it) is a visual demonstration of the Earth’s rotation.
		The time required for the pendulum to complete its swing is a function of its length.
		As the pendulum reaches the middle of its swing, it closes a circuit that activates the electromagnet.
	www.hmns.org /exhibits/permanent_exhibits/the_pendulum.asp (179 words)

	they.misled.us » Blog Archive » Foucault’s Pendulum
		Unfortunately, for the characters within Foucault’s Pendulum were not so lucky.
		Belbo, in bid for power, told the wrong person about the plan, but told it to them as if it were the truth.
		Foucault’s Pendulum is 641 pages, and well worth the read.
	they.misled.us /archives/479 (1163 words)

	The Foucault pendulum - the physics (and maths) involved
		Consider now a pendulum consisting of a particle at the end of a string length a attached to a point with coordinates in the O frame (0,0,L).
		Note the significance of the terms: the first is the string tension, the second is the apparent weight in the rotating frame and the third term, which depends on the velocity of the pendulum and on the earth's rotation, is the Coriolis "force".
		As usual, the real situation is more complicated: a finite pendulum which does not swing in a plane traces an ellipse whose axis precesses (in the direction of the orbit) even in a Newtonian frame.
	www.phys.unsw.edu.au /~jw/pendulumdetails.html (1553 words)

	Foucault Pendulum (Site not responding. Last check: 2007-10-26)
		The rotation of the plane of a free-swinging pendulum shows that the surface of the rotating eath is not fixed in an inertial reference frame.
		The electromagnet under the pendulum bob is switched on twice each cycle (when the steel pendulum wire contacts the charron ring) to replace the energy lost to friction.
		This Foucault pendulum was built by John Michener, OC'83, as a winter term project in 1980.
	www.oberlin.edu /physics/catalog/demonstrations/mech/foucault.html (147 words)

	Paris Pages Kiosque; Spinning Foucault's Pendulum at the Pantheon - November 1996
		The pendulum suspended from the ceiling of the Panthéon.
		Intrigued by Umberto Eco's account of Foucault's pendulum in his novel of the same name, I had set out in quest of it in the hopes of partaking in the supreme transcendental experience the narrator describes while watching it.
		Then, it continued, consider that the pendulum's plane of oscillation, which also doesn't touch the ground, remains unchanged with respect to the stars even as the earth rotates -- here is the proof that the Panthéon moves around the pendulum and not vice-versa.
	www.paris.org /Kiosque/nov96/foucault.html (991 words)

	FOUCAULT PENDULUM
		Imagine that the Foucault Pendulum is set up at the Geographic (2) South (or North) Pole (this is the simplest case - the motions are a little more complicated anywhere away from the Poles).
		He was asked to construct something "big" for the 1850 Paris Exhibition, and he constructed a 67-metre-tall Foucault Pendulum in the Pantheon - a Parisian church, also known as the church of Saint Geneviéve.
		The Foucault Pendulum is halfway along the length of the building.
	www.physics.usyd.edu.au /~jfellow/FOUCAULT/fpqvb.html (5593 words)

	Mathematical mysteries: Foucault's pendulum and the eclipse
		A Foucault pendulum is just like any other pendulum, nothing more than a weight attached to a wire; but to work well it needs to have a very long wire, with a really heavy weight.
		What makes a Foucault pendulum different from a normal pendulum is that it is attached at the top to a universal joint which allows the pendulum to rotate freely around its fixing point as it swings.
		The rate of rotation of Foucault's pendulum is pretty constant at any particular location, but in 1954, during an experiment with one, a physicist named Maurice Allais got a surprise.
	plus.maths.org /issue9/xfile (772 words)

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