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Magnetic Levitation:     more books (100)

Magnetic Levitation Technology and Transportation Strategies (S P (Society of Automotive Engineers)) Magnetic levitation: An entry from Thomson Gale's <i>Gale Encyclopedia of Science, 3rd ed.</i> by David E. Newton, 2004 Maglev Train Technologies and High-Speed Rail Programs: A Comprehensive Guide to Advanced Magnetic Levitation Technology, Benefits, and Advantages (Ringbound Book and CD-ROM Set) by U.S. Department of Transportation, Federal Railroad Administration (FRA), 2010-07-06 Magnetic levitation: tomorrow's transportation, (New York State Library. Legislative Reference Library. Reprint) by Frank Chilton, 1972 The Transrapid Magnetic Levitation System: A technical and commercial assessment (Working paper) by Brian D Sands, 1992 Safety of high speed magnetic levitation transportation systems U.S. maglev system concept definitions (SCDs), system safety review (SuDoc TD 3.15:93/22) by U.S. Dept of Transportation, 1993 Optical Levitation: Arthur Ashkin, Radiation Pressure, Electrostatic Levitation, Magnetic Levitation, Acoustic Levitation Technical background for a demonstration magnetic levitation system (SuDoc NAS 1.26:178301) by Colin P. Britcher, H.R. 4549--the Magnetic Levitation Transportation and Competitiveness Act of 1990 : hearing before the Subcommittee on Transportation, Aviation, and Materials ... June 7, 1990 (SuDoc Y 4.Sci 2:101/128) Design, construction, and testing of a combined magnetic levitation and propulsion system (Massachusetts Institute of Technology. Dept. of Mechanical Engineering. Thesis. 1977. B.S) by Michael Atlas, 1977 Magnetic levitation based on magnetic potential well (MPW) effect (SAE) by V. S Mikhalevich, 1991 Magnetic levitation transport of mining products (SuDoc I 28.23:9555) by J. J. Geraghty, 1995 Safety of high speed magnetic levitation transportation systems: Magnetic field testing of the TR07 maglev vehicle and system by Fred Dietrich, 1992 A magnetic levitation silicon wafer transport system by Ing-yann Albert Wang, 1993

lists with details

21. Magnetic Levitation Haptic Interfaces
    MSL MSL Projects - magnetic levitation Haptic Interfaces. magnetic levitation Haptic Interfaces. Using the magnetic levitation Haptic Interaction System,  
    http://www.cs.cmu.edu/~msl/haptic/haptic_desc.html

22. Boeing: MagLev Homepage
    of the magnetic levitation upgrade to the Holloman High Speed Test Track at Holloman Air Force Base, New Mexico.  
    http://www.boeing.com/defense-space/space/maglev/
    
    Extractions: MagLev More Information MagLev Home Current Activity Division of Work Features Facts Boeing is part of the General Atomics/Bechtel/Foster-Miller team designing and building a magnetic levitation upgrade to the Holloman High Speed Test Track at Holloman Air Force Base , New Mexico. The upgrade is a multiphased effort to provide a Hypersonic Ground Test Facility for the Air Force and the nation. The MagLev system will not only provide important test capability for our national defense, but will also establish many of the design parameters needed to understand this technology's potential for launch assist. That's why Boeing is working to leverage this MagLev technology for the benefit of NASA programs such as the Highly Reusable Space Transportation Phase II study The research reported in this paper was sponsored by the 46th Test Group (AFMC), Holloman AFB, NM, under a Boeing North American, Inc. subcontract through contract F08635-94-C-0016 with General Atomics. Opinions, conclusions, and recommendations contained in this article are those of the author and are not necessarily endorsed by the US Air Force. MagLev Home Current Activities Division of Work Features ... Privacy

23. Superconductivity Technology Center At Los Alamos
    magnetic levitation TRAINS Magnetically levitated (MAGLEV) trains are considered as a future application of HTS development. To  
    http://www.lanl.gov/superconductivity/train.shtml
    
    Extractions: Magnetically levitated (MAGLEV) trains are considered as a future application of HTS development. To understand why, we must look briefly at the history of the railroads. The development of trains and rails began in the early 1800s. The modern conventional train is no faster (~110 mph) than those of the late 1890s. So conventional trains have reached the end phase of their development. France, Germany, and Japan have developed "high-speed" or "bullet" trains capable of speeds of 150-180 mph. This improvement in speed is based upon improved rails and controls. However, this technology has also reached the end phase of its development. One limiting factor for these trains is the expensive and time-consuming maintenance of the rails. So it is the mechanical friction between train wheels and metal tracks that limit this technology. This leads us to the development of the magnetically levitated (no friction) trains. We briefly describe the history of this development. The idea of MAGLEV transportation has been around since the early 1900s. The benefit of eliminating the wheel/rail friction to obtain higher speeds and lower maintenance costs has great appeal. The basic idea of a MAGLEV train is to levitate it with magnetic fields so there is no physical contact between the train and the rails (guideways).

24. Popular Science | Ignorance = Maglev = Bliss
    For 150 years scientists believed that stable magnetic levitation was impossible. Then Roy Harrigan came along.  
    http://www.popsci.com/popsci/science/article/0,12543,577754,00.html
    
    Extractions: If you've ever tried to float one magnet over another (and who hasn't?), you know that the stupid thing just keeps flipping over an irritation formalized in 1842 when the Rev. Samuel Earnshaw published his famous theorem establishing mathematically that such magnetic levitation just can't be done. From that point on, any experimenter caught playing with magnets courted the derision of his colleagues: "Ha, ha, look at Fred over there trying to balance magnets! I guess he never heard of Earnshaw's theorem!" Physicists can be so cruel on the playground. Well, not so fast. It turns out that Earnshaw's theorem is absolutely correct, but it has a couple of loopholes large enough to drive all sorts of stable magnetic levitation devices through, including one you can now buy in any novelty shop for about $30: the Levitron. (For more info go to levitron.com

25. Magnetic Levitation
    Is magnetic levitation Possible? Other diamagnetic materials are common place and can also be levitated in a magnetic field if it is strong enough.  
    http://math.ucr.edu/home/baez/physics/General/Levitation/levitation.html
    
    Extractions: Original by Philip Gibbs and Andre Geim, March 1997. A theorem due to Earnshaw proves that it is not possible to achieve static levitation using any combination of fixed magnets and electric charges. Static levitation means stable suspension of an object against gravity. There are, however, a few ways to levitate by getting round the assumptions of the theorem. In case you are wondering, none of these can be used to generate anti-gravity or to fly a craft without wings or jets. The proof of Earnshaw's theorem is very simple if you understand some basic vector calculus. The static force as a function of position F x acting on any body in vacuum due to gravitation, electrostatic and magnetostatic fields will always be divergenceless. div F . At a point of equilibrium the force is zero. If the equilibrium is stable the force must point in towards the point of equilibrium on some small sphere around the point. However, by Gauss' theorem, F x ).d

26. ART TEC Magnetic Levitation Kit - Applications
    ART • TEC Guy Marsden. magnetic levitation KIT GALLERY OF APPLICATIONS. Send images of your application to guy@arttec.net to be posted here.  
    http://www.arttec.net/Levitation/Gallery/Levitation_Applications.htm

27. Magnetic Levitation
    magnetic levitation,  
    http://www.freewebs.com/ppxatc/
    
    Extractions: A new, exciting and innovative field of science Using a state of the art superconducting magnet capable of producing a magnetic field of 17 Tesla we are able to levitate a wide range of materials in mid air. Our research has led to new methods of mineral separation and flotation of dense metals such as gold and platinum. Materials in a magnetic field will become magnetised. Most materials such as water, wood, plastic etc are diamagnetic, which means that they are repelled by magnetic fields. This repulsive force is however very weak, typically a million times weaker than the attractive force a ferrmoagnetic material such as iron will experience due to a magnetic field. If the repulsive force due to a magnetic field on a diamagnetic object is exactly equal to the objects weight, then the object may be levitated in mid air. The magnetic fields require for this type of levitation are very large, typically 16T ( 250'000 times that of the Earth's own magnetic field ). To produce such conditions, superconductive magnets are usually required.

28. Usenet Physics FAQ
    magnetic levitation The Basicsmagnetic levitation The Basics. (Not of the Superconducting or Similar Variety). magnetic levitation of Graphite W. Braunbeck (1939).  
    http://hepweb.rl.ac.uk/ppuk/PhysFAQ/levitation.html
    
    Extractions: Version Date: 17 th May 2004 Usenet Physics FAQ This is the web version of the Usenet Physics FAQ (Frequently Asked Questions). Its purpose is to provide good answers to questions that have been discussed often in sci.physics and related usenet newsgroups. The articles in this FAQ are based on those discussions and on information from good reference sources. That does not mean that they are always perfect and complete. If you have corrections, updates or additional points to make please send an email to the editor, Don Koks (his cv is here ). If you want to write up an article following a news group discussion about a subject not yet covered here then feel free to send it to the editor, but please do not use this address to ask new questions. Ask them in the appropriate newsgroup instead. If you are new to the Physics newsgroups, welcome! Please read the article An Introduction to the Physics Newsgroups . It will help you find the right newsgroup for your questions and will give you other crucial advice about appropriate netiquette for these groups. Above all you should check carefully to see if your questions are answered in this FAQ before posting. This FAQ was created by Scott Chase in 1992. The web version was created, maintained and enlarged by Michael Weiss and Philip Gibbs. Others who have written for the FAQ are credited at the top of the items they submitted while many more who have made smaller contributions have been thanked privately.

29. Magnetic Levitation Trains
    Foster Business Library magnetic levitation Trains A search found no matches containing magnetic levitation on the PSRC website.  
    http://faculty.washington.edu/stevens/mag.html
    
    Extractions: Foster Business Library Magnetic Levitation Trains Assignment: Magnetic levitation trains: implementation of a magnetic levitation train between Seattle and Portland. Resources: Web Resources Reference Books General Books Annual Reports ... Help Web Resources: These online resources are available wherever you have web access; they do not require that you access them via the UW Connectivity Kit or the UW Libraries Proxy Server for authentication. When using web resources, be sure to evaluate the credibility of these resources. For a subject index to web resources, see Business Resources on the Web on the Foster Business Library homepage Governmental sources: Puget Sound Regional Council: The Puget Sound Regional Council is a regional data center that provides a wide variety of economic, demographic, geographic, and transportation data to its member cities, counties, businesses, and other interested parties. Data is available on a wide variety of demographic information, in spreadsheet formats, on race, income, housing, building permits, employment, transportation, etc. plus links to labor force, per capita income, population and regional CPI information. The Council site offers a search engine See their reports such as Growth in Traffic and Vehicle Miles Traveled (in PDF format) and Regional Travel Behavior . A search found no matches containing magnetic levitation on the PSRC website. A search for

30. MAGNETIC LEVITATION RESEARCH
    Colorado Department of Transportation magnetic levitation Research. PUBLIC INFORMATION PACKAGE. (5/14/02). FTA s Urban magnetic levitation Transit Program.  
    http://faculty.washington.edu/jbs/itrans/coloradodotmaglev.htm
    
    Extractions: Colorado Department of Transportation - Magnetic Levitation Research PUBLIC INFORMATION PACKAGE The Colorado Department of Transportation has entered into a "Memorandum of Understanding" to conduct research and development under the federal Urban Magnetic Levitation program. The other parties to this agreement are: Colorado Intermountain Fixed Guideway Authority (CIFGA) Sandia National Laboratories (SNL) MagLev Transit Group (MTG) In 1999, CIFGA and SNL were identified by the US Congress to each receive $1.75M to study and develop magnetic levitation technology for use in urban transit. MTG was selected, based on competitive proposals, by the Federal Transit Administration (FTA) to receive $742,000 to conduct magnetic levitation research. CDOT is receiving these $4,242,000 in grant funds through a cooperative agreement with the FTA and is contracting with the three participants to conduct the research and development. The state funds being used for appropriately related analysis in the ongoing I-70 west Programmatic Environmental Impact Study (I-70 PEIS) provide the required match. The I-70 PEIS study is expected to be result in a Record of Decision in 2004. CDOT is working in partnership with the other groups involved to provide accurate and complete information regarding possible advanced technology alternatives for the I-70 West Corridor. Information about this system, along with information on other fixed guideway systems, and highway, rubber-tire transit (bus), and other transportation alternatives, will be used to determine a preferred alternative for a long-term plan for the corridor.

31. Magnetic Levitation
    Damping of Levitated Magnet Motion. A small rareearth magnet is suspended above a yttrium based superconductor when the Magnetic  
    http://hyperphysics.phy-astr.gsu.edu/hbase/solids/maglev5.html
    
    Extractions: Damping of Levitated Magnet Motion A small rare-earth magnet is suspended above a yttrium based superconductor when the Magnetic field is actively excluded from the superconductor ( Meissner effect ).The tiny magnet can be caused to spin by tapping it with a small instrument such as the tip of tweezers. Even though the magnet is continuously suspended, this rotational motion is damped. The rotation will slow down and it will go into a rocking mode and finally come to rest. The magnet is suspended over the superconductor by immersing the superconducting disc in liquid nitrogen (77K). The induced currents in the superconductor mirror the poles of the magnet and adjust so quickly that the magnet can be translated or rotated and remain suspended. Experimenters: Darren Vick and Steven Gabriel The damping of the oscillatory motion of the levitated magnet was investigated by taking digital video of the motion and converting it to a Quicktime movie. Measurements from the Quicktime movie were made at 1/30 sec intervals using VideoPoint. The data was transferred to an Excel spreadsheet to make the plots. For a first approximation, the motion could be modeled as a damped sine wave Analysis of the damping in the illustration above gives a damping coefficient of 0.247. This number was obtained by doing a least-squares fit of the peaks of the damped oscillation. Closer examination reveals that the period of the damped motion is changing, as illustrated below.

32. Inductrak
    Post believes Inductrack offers NASA the potential for a far less expensive technology for magnetic levitation launchers than approaches using superconducting  
    http://www.llnl.gov/str/Post.html
    
    Extractions: FOR the past two decades, prototype magnetically levitated (maglev) trains cruising at up to 400 kilometers per hour have pointed the way to the future in rail transport. Their compelling advantages include high speeds, little friction except aerodynamic drag, low energy consumption, and negligible air and noise pollution. However, maglev trains also pose significant drawbacks in maintenance costs, mechanical and electronic complexity, and operational stability. Some maglev train cars, for example, employ superconducting coils to generate their magnetic field. These coils require expensive, cryogenic cooling systems. These maglev systems also require complicated feedback circuits to prevent disastrous instabilities in their high-speed operation. Lawrence Livermore scientists have recently developed a new approach to magnetically levitating high-speed trains that is fundamentally much simpler in design and operation (requiring no superconducting coils or stability control circuits), potentially much less expensive, and more widely adaptable than other maglev systems. The new technology, called Inductrack, employs special arrays of permanent magnets that induce strong repulsive currents in a "track" made up of coils, pushing up on the cars and levitating them. Totally Passive Technology During the past two years, a Livermore team, headed by physicist Richard Post, has successfully demonstrated the Inductrack concept in test trials. The test runs demonstrated the system's totally passive nature, meaning that achieving levitation requires no control currents to maintain stability, and no externally supplied currents flowing in the tracks. Instead, only the motion of train cars above the track is needed to achieve stable levitation. The results have been so promising that NASA has awarded a three-year contract to the team to explore the concept as a way to more efficiently launch satellites into orbit.

33. Magnetic Levitation Research Links
    This page provides links to other Web sites pertaining to magnetic levitation and high speed ground transport. magnetic levitation Research Links.  
    http://www.kyrene.k12.az.us/itech/amsitech/activities/maglev/links.htm

34. Woodworking
    magnetic levitation Vehicles. Introduction As we trains. This rail system is referred to as magnetic levitation, or maglev. Maglev  
    http://www.kyrene.k12.az.us/schools/Pueblo/Tech/maglev.htm

35. Magnetic Levitation ClearlyExplained.Com
    magnetic levitation ClearlyExplained.Com 7th August 2002. A straightforward and fast information guide to magnetic levitation from ClearlyExplained.Com.  
    http://www.clearlyexplained.com/technology/maglev/maglev.html
    
    Extractions: guide to magnetic levitation from ClearlyExplained.Com updated: 10 February 2004 What Why News How ... Future What is magnetic levitation? Essentially it is the use of magnetic fields (or magnetic forces) to levitate a (usually) metallic object. By manipulating magnetic fields and controlling their forces an object can be levitated. more The word 'levitation' comes from the latin word 'levis' meaning 'light'. source : dictionary.com What Why News How History ... Future Why is magnetic levitation important? Magnetic levitation is useful in a variety of applications. Simply levitating an object immediately suggests a number of things: Transport systems eg magnetically levitated trains.

36. TEA-21 - Fact Sheet: Magnetic Levitation Transportation Technology Deployment Pr
    magnetic levitation TRANSPORTATION TECHNOLOGY DEPLOYMENT PROGRAM. Year. 1997. 1998. 1999. 2000. 2001. 2002. 2003. Contract Authority. 0. 0. $15M. $20M. $25M. 0. 0.  
    http://www.fhwa.dot.gov/tea21/factsheets/r-maglev.htm
    
    Extractions: (subject to appropriation) Program Purpose The magnetic levitation transportation technology deployment program encourages the development and construction of an operating transportation system employing magnetic levitation capable of safe use by the public at a speed in excess of 240 miles per hour. [1218] Funding Features Contract authority out of the Highway Account of the Highway Trust Fund is provided for fiscal years 1999-2001 totaling $60 million. An authorization for an appropriation out of the Highway Account of the HTF is provided for an additional $950 million over fiscal years 2000-2003. These funds would have to be appropriated by the Congress before they would be available for expenditure. An eligible maglev project would also be eligible for other forms of financial assistance provided in Title 23, United States Code, and TEA-21, including loans, loan guarantees, and lines of credit. [1218]

37. Magnetic Levitation Of Trains
    magnetic levitation of trains. Q necesito realizar la levitacion magnetica de un tren puedes ayudarme (I need to understand the magnetic levitation of a train.  
    http://van.hep.uiuc.edu/van/qa/section/Electricity_and_Magnets/Maglev/2002040109
    
    Extractions: caracas venezuela In the future, maglev trains might be an option as a mode of transportation. In the structure of the track, there is a magnetized coil, called a guideway, that runs along the track and repels the large magnets on the train's undercarriage. This repelling force raises the train to about .39 to 3.93 inches above the guideway. When the train is raised, magnetic fields are created by the power supplied to the coils within the guideway walls; these magnetic fields pull and push the train along the guideway. The electric current is changing in polarity because they are continuously alternating in the coils, and this change in polarity causes the magnetic field in front of the train to pull the train at amazing speeds. Also, the magnetic levitation train can travel without friction because it rests above the guideway, with a layer of air in between, to achieve speeds at 310 miles per hour.

38. Magnetic Levitation
    magnetic levitation. Q can a donut shaped magnet levitate or keep a smaller magnet inside from touching the inside of a surrounding donut magnet  
    http://van.hep.uiuc.edu/van/qa/section/Electricity_and_Magnets/Maglev/2001040911
    
    Extractions: Yes, the magnet can float another magnet directly above it. However, this is not a stable position. The magnet you have above it will want to flip upsidedown so that it is attracted to the lower magnet. The magnet in the middle would also have a tendancy to move to the side to get away from the field. If you were to fix the position of the magnets so they don't drift or rotate, then you could get some small shock suppression, but the force you get is very small when compared to a spring. So this is not very efficient.

39. MSN Encarta - Magnetic Levitation Train
    magnetic levitation Train. magnetic levitation train technology can be used for urban travel at relatively low speeds (less than 100 km/h, or less than 62 mph).  
    http://encarta.msn.com/encyclopedia_761579465/Magnetic_Levitation_Train.html
    
    Extractions: MSN Home My MSN Hotmail Shopping ... Money Web Search: logoImg('http://sc.msn.com'); Encarta Subscriber Sign In Help Home ... Upgrade to Encarta Premium Search Encarta Tasks Find in this article Print Preview Send us feedback Related Items Monorail Public Transportation more... Magazines Search the Encarta Magazine Center for magazine and news articles about this topic Further Reading Magnetic Levitation Train News Search MSNBC for news about Magnetic Levitation Train Internet Search Search Encarta about Magnetic Levitation Train Search MSN for Web sites about Magnetic Levitation Train Also on Encarta Road trip reading Special: Never stop learning Democrats vs. Republicans: What's the difference? Also on MSN Outdoor BBQ: Everything you need Quest for Columbus on Discovery Channel Switch to MSN in 3 easy steps Our Partners Capella University: Online degrees LearnitToday: Computer courses CollegeBound Network: ReadySetGo Kaplan Test Prep and Admissions Encyclopedia Article from Encarta Advertisement Magnetic Levitation Train Multimedia 1 item 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).

40. MSN Encarta - Multimedia - Magnetic Levitation Train
    Appears in, magnetic levitation Train. This magnetic levitation train, which is under development in Germany, can reach speeds of 435 km/hr (270 mph).  
    http://encarta.msn.com/media_461527204/Magnetic_Levitation_Train.html
    
    Extractions: MSN Home My MSN Hotmail Shopping ... Money Web Search: logoImg('http://sc.msn.com'); Encarta Subscriber Sign In Help Home ... Upgrade to Encarta Premium Search Encarta Multimedia from Encarta Appears in Magnetic Levitation Train High-speed magnetic levitation trains, known as maglevs, are faster, smoother, and quieter than conventional trains, although they are not yet practical for commercial transportation. Several countries, including Germany, Japan, and the United States, have maglev development programs. This magnetic levitation train, which is under development in Germany, can reach speeds of 435 km/hr (270 mph). Woodfin Camp and Associates, Inc./Thomas Raupach Appears in these articles: Magnetism; Magnetic Levitation Train Exclusively for MSN Encarta Premium Subscribers Try MSN Internet Software for FREE! ... Feedback

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