2006-10-02 00:08:35 · 10 answers · asked by Jabelu Firoz 2 in Science & Mathematics ➔ Physics
You may have experienced same ends of magnets repel each other. Using that phenomenon, there are devices that levitates objects. Best eg. magnetically levitated trains.
2006-10-02 00:16:28 · answer #1 · answered by nalaka 2 · 0⤊ 0⤋
Magnetic levitation is the process by which an object is suspended above another object with no other support but magnetic fields. The electromagnetic force is used to counteract the effects of the gravitational force.
Magnetic levitation trains are becoming a popular transportation topic all around the globe. High-speed rail technology; train is suspended on a magnetic cushion above a magnetized track and so travels free of friction
2006-10-02 00:32:33 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Leaving science fiction aside, science does know scores of different ways to levitate things. For instance, a helicopter can be considered as a very impressive levitation device that uses a stream of air to keep floating. Scientists have also found many ways to levitate things without any noise or the need for petrol or air, by using electromagnetic fields. Levitating trains and levitating displays are but two examples of electromagnetic levitation. However, in all such schemes, a source of energy (an engine or a battery at least) is always required to keep an object afloat. Remove the battery and the levitation inevitably stops.
Today's science knows only one way to achieve REAL levitation, i.e. such that no energy input is required and the levitation can last forever. The real levitation makes use of diamagnetism , an intrinsic property of many materials referring to their ability to expel a portion, even if a minute one, of an external magnetic field. Electrons in such materials rearrange their orbits slightly so that they expel the external field. As a result, diamagnetic materials repel and are repelled by strong magnetic field.
2006-10-02 00:30:06 · answer #3 · answered by deepa k 1 · 0⤊ 0⤋
Magnetic levitation is the process by which an object is suspended above another object with no other support but magnetic fields. The electromagnetic force is used to counteract the effects of the gravitational force.
2006-10-02 00:15:36 · answer #4 · answered by Anonymous · 0⤊ 0⤋
A high-speed rail technology by which a train can travel free of friction at speeds of 480 kilometers (300 miles) per hour or more. The train is suspended on a magnetic cushion about half an inch above an elevated magnetic track, whose moving magnetic field alternately attracts and repels magnets mounted on the train, which is pushed and pulled along by this process.
2006-10-05 22:25:09 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Magnetic levitation is achieved by magnetic force using the principal of repulsion of like poles. This is used in rail transportation which makes frictionless movement possible
2006-10-02 00:19:06 · answer #6 · answered by ash v 3 · 0⤊ 0⤋
levitation is basically floating in air
so magnetic levitation is floating in air under the influence of a magnetic field
it could also be in vaccuum
2006-10-02 20:26:01 · answer #7 · answered by chaits89 2 · 0⤊ 0⤋
definite. that's even used in trains in the present day. they're said as mag lev trains or magnetic levitation trains. They use magnets with same polarity dealing with one yet another to levitate, and they use some style of propulsion equipment, no longer particular what that's even with the actuality that.
2016-12-04 03:13:23 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Floating in mid-air using magnetic field.
http://www.thinkgeek.com/geektoys/cubegoodies/80df/
2006-10-02 00:10:59 · answer #9 · answered by changmw 6 · 0⤊ 0⤋
The good explenation is on this site:
http://en.wikipedia.org/wiki/Magnetic_levitation
Hope it will help, good luck!
2006-10-02 01:31:41 · answer #10 · answered by Andreja K 3 · 0⤊ 0⤋