Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended above another object with no support other than magnetic fields. The electromagnetic force is used to counteract the effects of the gravitational force.
Earnshaw's theorem proved conclusively that it is not possible to stably levitate using static, macroscopic, "classical" electromagnetic fields. The forces acting on an object in any combination of gravitational, electrostatic, and magnetostatic fields will make the object's position unstable. However, several possibilities exist to make levitation viable, by violating the assumptions of the theorem — for example, the use of electronic stabilization or diamagnetic materials.
More on [ Magnetic levitation ]

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Barry's Magnetic Levitation Plans - How to design a magnetic levitation demonstrator using photodetectors and electronics to control an electromagnet.
Meta Description: [ Suspend a steel ball in mid-air using
an electromagnet. Complete plans and design information included. ]
Fun with Diamagnetic Levitation - A simple how-to for creating your own diamagnetic levitation experiments, complete with demonstration images and thorough explanations.
Meta Description: [ How to set up your own diamagnetic levitation experiments. ]
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Fundamentals of Maglev - Basic physics, types of maglev, how they float, and issues related to Maglev Trains.
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High Speed Ground Transportation Association - Organization working to expand high speed ground transportation in the United States.
Meta Description: [ The High Speed Ground Transportation Association is a not-for-profit trade association based in Washington, D.C., whose members are drawn from a wide array of public and private business interests, including: the financial community; engineering and design firms; labor unions; rail equipment manu... ]
Maglev and Other Research of Dr. Marc T. Thompson - Research Interests of Marc T. Thompson, Ph.D., System Design Consultant and Professor of Electrical Engineering.
Meta Description: [ Research Interests of Marc T. Thompson, Ph.D., System Design Consultant
and Professor of Electrical Engineering. Analog, Magnetic, Power Electronics
and Electromechanical Design. Magnetic Suspensions and Maglev ]
Maglev Quicklinks - Links to systems currently operational or under development.
MAGLEV-2002 - The 17th International Conference on Magnetically Levitated Systems and Drives, Lausanne. The conference is aimed to present the existing industrialization status, the marketing and social aspects, and application of MAGLEV for high-speed transportation systems.
Magnetic Levitation - Magnetic levitation research at the University of Nottingham, England.
Meta Description: [ Research into magnetic levitation and microgravity at the University of Nottingham ]
Magnetic Levitation and Analog Servocontroler - Site presents original and exclusive experiences relating to magnetic levitation, servocontrol, etc. for a hobbyist.
Meta Description: [ An magnetic object floating above a plan, do it yourself ]
Magnetic levitation links and experiments by Bill Beaty - Magnetic levitation links. Also experiments by Bill Beaty. Part of Bill Beaty's extensive science site.
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Revolve Magnetic Bearings, Inc. - Design, development, manufacture and implementation of magnetic bearings. The company provides solutions where other bearings fail.
Shanghai Pudong Airport MagLev in Depth - Discover what a real Maglev in operation looks like. Contains many pictures and ticket information.
Meta Description: [ Believe me. This article is the most in depth one on the topic of Maglev of Shanghai Pudong Airport. I have talked about Maglev before in these two articles: Maglev Operates in Shanghai and Ticket for Maglev Tour. Here are... ]
Shanghai's Maglev - the world's fastest train - The future is here, in Shanghai, where the world's first maglev is up and running, reports Ron Gluckman.
Meta Description: [ It's not a bird or a plane, just Shanghai's new maglev, the world's fastest train ]
The Frog That Learned to Fly - Plenty of materials can be levitated in a strong magnetic field - from simple metals, liquids, and various polymers to everyday things such as various plants and living creatures (frogs, fish and a mouse).
Thompson Consulting - Magnetic suspensions and power electronics design.
Urban Maglev - Discussion group and news archive for those interested in low speed maglev (urban maglev), quiet trains designed for urban transit, with top service speeds usually under about 100mph.
Meta Description: [ UrbanMaglev: Urban Maglev Interest Group ]
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