Geometry.Net - Science: Levitation Magnetic


Home - Science - Levitation Magnetic

e99.com Bookstore

Images

Newsgroups

41-60 of 86 Back | 1 | 2 | 3 | 4 | 5 | Next 20

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Levitation Magnetic: more books (100)

Safety of high speed magnetic levitation transportation systems: Comparison of U.S. and foreign safety requirements for application to U.S. maglev systems by Alan J Bing, 1993
Electric vehicle propulsion and magnetic levitation (SAE) by Floyd A Wyczalek, 1988
A simulation for a magnetic levitation track by Donald S Abbott-McCune, 1998
Dynamic characteristics and control requirements of alternative magnetic levitation systems by D. F Wilkie, 1973
Development of high-speed transportation corridors, including those which may utilize magnetic levitation technology : hearing before the Subcommittee ... May 3, 1990 (SuDoc Y 4.P 96/11:101-79)
Magnetic Levitation Technology for Advanced Transit Systems (S P (Society of Automotive Engineers)) by B. C.) Future Transportation Technology Conference and Exposition (1989 : Vancouver, 1989-08
Magnetic Levitation and Rail Systems (S P (Society of Automotive Engineers)) by Society of Automotive Engineers, 1995-08
Safety of high speed magnetic levitation transportation systems : preliminary safety review of the Transrapid Maglev System (SuDoc TD 3.2:H 53/3) by U.S. Dept of Transportation, 1991
Magnetic levitation: tomorrow's transportation, (New York State Library. Legislative Reference Library. Reprint) by Frank Chilton, 1972
Magnetic levitation transportation issues: Hearing before the Subcommittee on Railroads of the Committee on Transportation and Infrastructure, House of ... Congress, first session, June 21, 2001 by United States, 2001
Magnetic levitation and propulsion, 1975
Assessment of the Potential for Magnetic Levitation Transportation Systems in the United States. Two Volumes. Moving America. New Directions, New Opportunities. A Report to Congress and Report Supplement. June 1990 by Gilbert E. Carmichael, 1990
Integrated magnetic propulsion and suspension test procedure for the unipolar linear synchronous test motor (MAG-transit engineering study report) by N. F Gerth, 1986
Fourth International Symposium on Magnetic Suspension Technology proceedings of a symposium sponsored by the National Aeronautics and Space Administration, ... 30-November 1, 1997 (SuDoc NAS 1.55:207654) by NASA, 1998

lists with details

Barry's Magnetic Levitation
Suspend a steel ball in midair using an electromagnet. Complete plans and design information included.
http://www.coilgun.info/levitation/home.htm

Extractions: These coilguns with control circuits are great! Now... How can you use them for magnetic levitation This is slightly off-topic from coilguns, but magnetic levitation has many common design principles and is a little easier to build! If you hold two permanent magnets close together, you see that one of them will jump strongly toward (or away) from the other. In 1842, Samuel Earnshaw expressed the perversity of inanimate magnetic objects in his theorem. It explains this frustrating behavior will always prevent you from suspending one permanent magnet above or below another, no matter how one arranges the two magnets. However, an active control circuit can get around this problem by rapidly adjusting the magnet's strength. The general principle is straight forward: An electromagnet pulls a ball upward while a light beam measures the exact position of the ball's top edge. The magnet's lifting force is adjusted according to position. As less light is detected, the circuit reduces the electromagnet's current. With less current, the lifting effect is weaker and the ball can move downward until the light beam is less blocked. Voila! The ball stays centered on the detector! It is a small distance across the photodetector, perhaps a millimeter or two, but this is sufficient to measure small changes in position. Of course, if the ball is removed the coil runs at full power. And conversely, if the light beam is blocked the coil is turned completely off.
Your Page Title
www.nottingham.ac.uk/~ppxatc/ levitation/levitation_Homepage.html Similar pages LANL Superconductivity Technology Center magnetic levitation TrainSuperconductivity Technology Center - magnetic levitation trains The idea of MAGLEV transportation has been around since the early 1900s.
http://www.nottingham.ac.uk/~ppxatc/levitation/Levitation_Homepage.html
Magnetic Levitation Stirrers
The V P Scientific, Inc. magnetic levitation Stirrers (US patent 6357907) were designed to stir the tall narrow columns of deep well 96 and the new Whatman
http://www.vp-scientific.com/magnetic_levitation.htm

Extractions: honey ~ 15,000 cst The follow graph illustrates that it will levitate the balls in all the standards, however it took several minutes for the ball to fall by gravity or with the assist of a pull down magnet with the 60,000 and 100,000 cst standards. Modification of the Stirrer with a stronger pull down magnet would perhaps solve this problem.
Magnetic Levitation Train - MSN Encarta
magnetic levitation Train, also maglev train, a highspeed ground transportation vehicle levitated above a track called a guideway and propelled by
http://encarta.msn.com/encyclopedia_761579465/Magnetic_Levitation_Train.html

Extractions: var s_account="msnportalencarta"; MSN home Mail My MSN Sign in ... more Hotmail Messenger My MSN MSN Directory Air Tickets/Travel Autos City Guides Election 2008 ... More Additional Reference Materials Thesaurus Translations Multimedia Other Resources Education Resources Math Help Foreign Language Help Project Planner ... Help Related Items more... Encarta Search Search Encarta about Magnetic Levitation Train Also on Encarta Secret students What colleges really want Famous misquotes quiz Advertisement Encyclopedia Article Find Print E-mail Blog It Multimedia 3 items Magnetic Levitation Train , also maglev train, a high-speed ground transportation vehicle levitated above a track called a guideway and propelled by magnetic fields ( see Magnetism ). Magnetic levitation train technology can be used for urban travel at relatively low speeds (less than 100 km/h, or less than 62 mph). For example, a short-distance maglev shuttle operated for 11 years from 1984 to 1995 between the Birmingham, England, airport and the city train station. However, the greatest worldwide interest is in high-speed maglev systems. Train speeds of 552 km/h (343 mph) have been demonstrated by a full-size maglev vehicle in Japan, while in Germany a maglev train has run at 450 km/h (280 mph) and in China a maglev train has reached a peak speed of 432 km/h (268 mph). Two different approaches to magnetic levitation train systems have been developed. The first, called
Maglev Systems Development Department Home Page
The SCM suffers from external magnetic disturbances caused by ground coils ground coils which consist of sidewall levitation coils; a highpower supply
http://www.rtri.or.jp/rd/maglev/html/english/maglev_frame_E.html
Wiley::Superconducting Levitation: Applications To Bearing & Magnetic Transporta
Presents the fundamental principles governing levitation of material bodies by magnetic fields without too much formal theory. Defines the technology of
http://eu.wiley.com/WileyCDA/WileyTitle/productCd-0471559253.html

Extractions: United States Change Location . Exclusive offers, news and more. Related Titles More By This Author Chaotic and Fractal Dynamics: An Introduction for Applied Scientists and Engineers Chaotic Vibrations: An Introduction for Applied Scientists and Engineers Electricity Differential Forms in Electromagnetics by Ismo V. Lindell by Ruth W. Chabay, Bruce A. Sherwood by Ruth W. Chabay, Bruce A. Sherwood Electromagnetic Fields, 2nd Edition by Roald K. Wangsness Electromagnetism, Second Edition by I. S. Grant, W. R. Phillips Click to Close Visit Wiley InterScience now Presents the fundamental principles governing levitation of material bodies by magnetic fields without too much formal theory. Defines the technology of magnetic bearings, especially those based on superconductivity, and demonstrates the key roles that magnetics, mechanics and dynamics play in the complete understanding of magnetic levitation and its bearings. Features extensive figures and photos of Mag-Lev devices and summarizes recent U.S. research studies in an effort to regain the lead in Mag-Lev technologies.
Carnegie Mellon University Researchers Develop Magnetic Levitation-Based Haptic
Carnegie Mellon University researchers have developed a new type of haptic interface employing magnetic levitation that enables computer users to physically
http://www.sciencedaily.com/releases/1999/02/990212070951.htm

Extractions: Share Blog Cite Print Email Bookmark ScienceDaily (Feb. 12, 1999) See also: The device is unique because it enables people to not only touch these objects, but to reach in and manipulate them in three dimensions as well. The new system also eliminates the bulky links, cables and mechanisms of current haptic interfaces in favor of a single, lightweight moving part, which floats on magnetic fields. The system has a bowl-shaped floating element containing six levitation coils surrounded by strong, permanent magnets. A protruding handle attached to the bowl is grasped by the computer user, enabling interaction with solid, three-dimensional models graphically depicted on the computer screen. The system is housed in a desktop-high cabinet. It has taken Hollis and his Ph.D. student, Peter Berkelman, five years to develop the haptic interface. They believe that future applications of the technology will be in computer-augmented design, medical training, entertainment, flight simulation and the interactive control of remote robots. http://www.cs.cmu.edu/~msl
Educational Control Products - Control Systems - Magnetic Levitation
ECP s unique MagLev apparatus dramatically demonstrates closed loop levitation of permanent and ferromagnetic elements. The apparatus includes laser
http://www.ecpsystems.com/controls_maglevit.htm

Extractions: E CP's unique MagLev apparatus dramatically demonstrates closed loop levitation of permanent and ferromagnetic elements. The apparatus includes laser feedback and high flux magnetics to affect large displacements and provide visually stimulating tracking and regulation demonstrations. The system is quickly set up in the open loop stable and unstable (repulsive and attractive fields) configurations shown. By adding a second magnet, two SIMO plants may be created, and by driving both actuators with both magnets, MIMO control is studied. The inherent magnetic field nonlinearities may be inverted via provided real-time algorithms for linear control study or the full system dynamics may be examined. Disturbances may be introduced via the second drive coil for demonstrating system regulation in SISO and SIMO operation The field interaction between the two magnets causes strong cross coupling and thus produces a true multi-variable system. The inherent magnetic field nonlinearities may be inverted via provided real-time algorithms for linear control implementation or the full system dynamics may be studied. This plant provides substantially more configuration flexibility and, by virtue of its dramatically greater levitation travel range, greater visual impact in demonstrations than any other educational maglev system.
ESA - Science On Stage - Electrodynamic Levitation And Travelling Magnetic Wave
Electrodynamic levitation is based on eddy currents when a magnet (or The above principles are applied in magnetic levitation highspeed trains such as
http://www.esa.int/SPECIALS/Science_on_Stage/SEMFA58OY2F_0.html

Extractions: Home Science on Stage What is Science on Stage? National activities International festivals How can I take part? ... European Science Teaching Award Winners Multimedia Science on Stage 2 Image Gallery Sunday 1 April 07 page 1 page 2 Monday 2 April 07 page 1 page 2 page 3 Tuesday 3 April 07 page 1 page 2 page 3 page 4 ... Wednesday 4 April 07 Thursday 5 April 07 page 1 page 2 page 3 page 4 Friday 6 April 07 page 1 page 2 More images Images Slovak Rep. Images Germany Science on Stage 2 Video Gallery Teaching Ideas Astronomy Biology Chemistry Environmental ... Mathematics Physics Physics I Physics II Science Teaching Approaches About us Organisers Nucleus Contact us Search All This project consists of a device which shows the phenomena of the electrodynamic levitation of a magnet by a moving aluminum disc, and another device which shows the travelling magnetic wave produced by a linear motor coil . Also, there are two working models of different magnetic trains based on the above phenomena. Electrodynamic levitation is based on eddy currents: when a magnet (or electromagnet) runs over an aluminum or any other non-ferromagnetic conductive plate, it creates a âmirrorâ magnet in the metal which repulses the moving magnet . In our device, a magnet balanced on scales is levitated by a rotating aluminum disc. The travelling magnetic wave is produced by a linear motor (LIM) which is like a common three-face inductive motor, cut and opened flat. Thus, it creates a travelling magnetic wave. In our devices, small magnets on flexible strips are moved by the traveling magnetic wave, thus forming its shape, and also propelling the magnet on wheels or an aluminium wagon. The above principles are applied in magnetic levitation high-speed trains such as Magplane andYamanashi (500-550 Km/h).
Science Central : Science - Physics - Electromagnetism - Magnetic Levitation
How to design a magnetic levitation demonstrator using photodetectors and electronics to magnetic levitation links. Also experiments by Bill Beaty.
http://www.sciencecentral.com/category/196267
Riding The World's Fastest Train In Shanghai. - By Henry Blodget - Slate Magazin
So, in 2001, with Germany s Transrapid International seeking a place to demonstrate its magnetic levitation trainand apparently willing to give the
http://www.slate.com/id/2115114/

Extractions: var PStax = 84997;var msn_cobrand = 0; placeAd(1,'slate.business/slate') Home go east, young man Campaign 2008 Sports Slate on NPR ... Video placeAd2('business/slate','120x90',false); adsonar_placementId=1307705;adsonar_pid=833778;adsonar_ps=-1;adsonar_zw=134;adsonar_zh=620;adsonar_jv='ads.adsonar.com'; placeAd(3,'slate.business/slate') placeAd(6,'slate.business/slate') More
Web Quest Exploring Magnetic Levitation Technology
Teacher s resources on teaching maglev, including tasks and evaluations for students.
http://www.ic.sunysb.edu/Stu/ppoggio/maglev/
U Of M - CIAMR
The physical principle behind magnetic levitation is that all diamagnetic objects magnetically polarize when immersed in a strong magnetic field.
http://www.ciamr.umn.edu/Levitation.html

Extractions: All materials experience a force when placed in a region of magnetic field and field gradient. The magnitude of this force depends upon the magnetic susceptibility of the material and this varies over a wide range depending on the type of material. Ferromagnetic materials have large susceptibilities and can generate large forces even in modest fields and gradients. Force interactions between ferromagnetic materials and magnetic fields are evident in everyday life and even more so when working with high magnetic fields. The physical principle behind magnetic levitation is that all diamagnetic objects magnetically polarize when immersed in a strong magnetic field. In the presence of a strong magnetic field gradient, parallel to the polarizing field, the diamagnetic sample experiences a magnetic force. Orienting this force opposite to the gravitational force can lead to no net force on the object; thus, levitation occurs (Fig 1). The force per unit mass is:
Robust Position Control Of A Magnetic Levitation System Via
Your browser may not have a PDF reader available. Google recommends visiting our text version of this document.
http://ieeexplore.ieee.org/iel5/41/28307/01265780.pdf
China Develops Magnetic Levitation Train
PhysOrg news China develops magnetic levitation train.
http://www.physorg.com/news9749.html
Gadgets: Magnetic Levitation Photo Frame
Don t settle for just a plain old picture frame when you can have a picture frame suspended in midair This.
http://gizmodo.com/gadgets/gadgets/magnetic-levitation-photo-frame-183481.php

Extractions: 2,089 views Read More: Earnings Report: Go Ahead, Call Microsoft "M$" Marijuana Vending Machines Opening For Business in LA Samsung GX-20 DSLR: Pentax K20D's Guts, Different Body Ring Gun Won't Get Through Airport Security ... PHOTO Subscribe BY blake AT 06/26/06 09:45 PM So I'm assuming this thing plugs into a wall outlet, but what happens when thee power goes out or something? That picture frame goes careening off the table and explodes on the ground? Flag BY murc AT 06/27/06 12:33 AM its magnetic genius...you dont plug it in. *rolls eyes* I think it looks alright...It would be better if they had a digital picture frame...But that might interfere with the magnetic field.
Magnetic Levitation
For an explanation of Earnshaw s theorem M. D. Simon, L. O. Heflinger, and A. K. Geim, Diamagnetically stabilized magnet levitation , American Journal of
http://groups.mrl.uiuc.edu/chiang/Chiang/Magnetic Levitation.htm

Extractions: Magnetic Levitation at Room Temperature Tai C. Chiang (first draft 8/7/2004) Simple and inexpensive levitation no batteries, no liquid nitrogen, and no complicated electronic circuits. Stable passive diamagnetic levitation at room temperature using permanent magnets Many people have seen levitation tricks. A common one is a magnet floating above a piece of YBCO high-temperature superconductor cooled by liquid nitrogen. One can also levitate a frog (or other animals or objects) with a very powerful superconducting magnet. But these tricks are hard to do at home. For levitation enthusiasts, here is a simple experiment. You can levitate a piece of graphite at room temperature using powerful permanent magnets. The cost can be as low as a dollar. Pictures for a quadrupole set. These are some of the simplest configurations. The magnets are arranged with the north poles of adjoining magnets alternately pointing up and down. The magnets are neodymium-iron-boron (NIB) magnets coated with nickel or gold. Small ones are inexpensive. You can find many vendors on the web. You can also find such magnets in some stores. NIB magnets of 0.5-inch size or larger can be dangerously powerful and should not be used by beginners. Keep the magnets away from medical equipment, computers, monitors, TVs, cards with magnetic strips, and other magnetic objects. You can use fairly small ones for levitation. The 3x3 configuration above uses 1/8-inch cubes. High grade NIB magnets (N50 for example) are better, but the cost is higher. N38 grade is more common and cheaper, and works nearly as well.
Superconducting Magnetic Levitation Model Train
Superconducting magnetic levitation Model Train from the IFW Dresden, Germany. It is cooled with liquid nitrogen. The core is a super conducting material
http://www.flixxy.com/magnetic-levitation-model-train.htm

Extractions: Superconducting Magnetic Levitation Model Train from the IFW Dresden, Germany. It is cooled with liquid nitrogen. The core is a super conducting material which conducts electric current without any resistance at temperatures below minus 180 degrees Celsius (minus 292 degrees Fahrenheit). In this state it can trap magnetic fields. The resulting magnetic forces cause not only the levitation but precision control above the rail, which is made of conventional magnetic material. More info at Supratrans.de and Evico.de
A Smaller, Sleeker Heart Pump
Khanwilkar and his colleagues turned to a technology that no other blood pumps or other heart devices incorporated in the early 1990s magnetic levitation,
http://www.businessweek.com/innovate/content/jan2007/id20070116_604821.htm

Extractions: Register Sign In About Our New Lifestyle Channel by Reena Jana The Levacor device has only one moving part, a spinning rotor. WorldHeart Levacor relies on magnetic levitation to suspend the rotor, eliminating the need for bearings. WorldHeart Artist's rendering of the Levacor implanted in patient. WorldHeart The Levacor pushes blood from the heart into the circulatory system. WorldHeart Back in 1982, Barney Clark, a 61-year-old dentist, was implanted with the world's first artificial heart, the Jarvik-7, a cumbersome piece of equipment with complicated external mechanisms. The device, which extended Clark's life for 112 days, required the patient to be hooked up, via hose-like tubes emerging from his chest, to a machine the size of a laundry dryer. The machine supplied bursts of air that helped to pump the mechanical heart. Today's medical-device designers foresee a more independent existence for patients suffering from heart failure. Just as the designers of popular consumer electronics such as Apple's ( AAPL ) iPod or Motorola's ( MOT ) RAZR phone have been able to slim their products to wafer-thinness, medical engineers and consultants are employing similar strategies and innovations to create slimline devices that are genuinely life-enhancing.
SPS Project: Magnetic Levitation
Many people are familar with magnetic levitation using superconductors. This occurs because the superconductor is a perfect diamagnet.
http://cas.umkc.edu/physics/sps/projects/maglev/maglev.html

Extractions: SPS has made a slight twist on the above by using bismuth, which is a diamagnet, to levitate a rare earth magnet. Below are a couple of photographs of the set up that SPS put together for magnetic levitation. A rare earth magnet is being suspended between two bismuth plates. There is a stack of ceramic magnets above.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

41-60 of 86 Back | 1 | 2 | 3 | 4 | 5 | Next 20