Maglev can create frictionless, efficient, faroutsounding technologies. Maglev research and development began in germany and japan during the early 1970s. Permanent magnetic levitation and stability springerlink. When assembled as described, the system exhibits high sensitivity to initial conditions and considerable visible wobble of the object. To create that we will take the modeling clay and stick the pencil into it vertically. It uses pencil lead levitating in a track built from neodymium magnets. Practical applications of magnetic levitation technology. Current projects nclusion introduction maglev, or magnetic levitation, is a system of transportation.
The pencil levitates in a horizontal position, as shown. Try to rotate the pencil in a circular motion while it is in the levitated position. Since then magnets have been used in many applications. Static magnetic levitation demonstration arvindguptatoys. Graphite pencil lead is one of the most common diamagnetic solids. The tip of the pencil is in point contact with a vertical plastic disk, cut from a used cd. The discovery of magnetism dates back to ancient time, when people first noticed that load stones naturally occurring magnetized ore attracted iron pieces. This work describes the development of magnetic levitation maglev using ring magnets and a configuration which we call axial maglev to remove the physical barriers to physical sampling in the magnetic field present in standard maglev and to simplify the procedures used to carry out densitybased analyses, separations, and manipulations. The student is expected to observe forces, such as magnetism and gravity acting on objects. Magnetic levitation transport, or maglev, is a form of transportation that suspends, guides and propels vehicles especially trains via electromagnetic force. Us4910633a magnetic levitation apparatus and method. Lithium showed you that pyrolytic graphite was diamagnetic, and that it could be stably levitated over magnets.
Magnetic levitation is a way to suspend objects in air without any support, as if in defiance of gravity. Magnetic levitation maglev or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. The magnets used in magnetic levitation suspend an object free of contact with any surface, making it particularly appropriate for highspeed 275300 mph435475 kmh transportation, where it greatly reduces friction and allows for fast, quiet operation. Impress your friends with this cool floating pencil trick. Make sure the magnets are spaced an equal distance apart. This kit is based on a lowcost design developed in 4, which uses proportional. Sep 27, 2014 principle of magnetic levitation the 8 figured levitation coils are installed on the sidewalls of the guideway. A method and apparatus for levitating objects in a magnetic field, comprising disposing at least one electromagnet having a centrally disposed core with at least one end positioned adjacent an outer surface of the electromagnet, connecting the electromagnet to a switchable electrical power source, and mounting at least one magnet on the object to be levitated. Magnetic levitation is a method by which an object is suspended in the air with no support other than magnetic fields.
One electromagnet pole faces a black post upon which a 2. Magnetic levitation is the use of magnetic fields to levitate a usually metallic object. Discover how maglev trains work using magnetic levitation. The levitation station is the part that houses the majority of the magnets. Magnetic levitation project physics project science. Jun 24, 2009 this pencil spins, levitates and writes this work was supported by iucaa and tata trust. Have the kids attach four of the ring magnets to a flat surface with some modeling clay. Download the seminar report for magnetic levitation.
Dec 21, 20 physics project on magnetic levitation and its applications. Magnetic levitation driving without wheels presentation outline 1. If a small permanent magnet is placed above a superconductor, it can be levitated by this repulsive force. Make four holes in the middle of the foam board and stick the magnets in the holes. The video below gives a demonstration of the diamagnetic effects of pencil leads, including levitation over an array of neodymium magnets. These maglev trains use the attractive and repellant nature of magnets to levitate or float above the tracks. The physics of magnetic levitation physics 212x spring 2011 john dutton 04122011 magnets make up a huge part of our everyday lives. The magnetic field the magnets produce as they repel each other pushes on the pencil from all sides, causing the pencil to stand up. Magnetic levitation the need for fast and reliable transportation is increasing throughout the world.
Highspeed rail has been the solution for many countries. Take this setup and put one of the ring magnets into the pencil. Magnetic levitation principles introduction magnetic fields are used to describe forces at a distance from electric currents. Feb 17, 20 graphite pencil lead is one of the most common diamagnetic solids. This signal is fed back through a levitation constant that is defined by properties of. Axial magnetic levitation using ring magnets enables simple. Keep it long if you can to make a few of the later steps a bit easier. It was repelled by a magnetic field, and this repulsion was strong enough to levitate it. This is an amazing magnet trick where you can make a levitating pencil which will not be in contact. In another wellknown arrangement, a small neodymium magnet levitates between pyrolytic graphite or bismuth. The ball elevation from the post is measured using a sensor embedded in the post. The common point in all applications is the lack of contact and thus no wear and friction.
We have developed a new magnetic levitation project option for fulfilling the. When the poles are labeled we will be ready to create the conditions under which the levitation can take place. Start by cutting a piece of hard wood on the table saw to 1. How to simply demonstrate diamagnetic levitation with. Highspeed movement is a result of magnetic levitation while propulsion is provided by the fine placement of electromagnets in the form of coils.
An unsung phenomenon of the past which is now being put to use in a variety of interesting and useful applications. The pencil is levitated in the air due to balancing of forces. The gadget is easy to build from simple material and is an excellent pedagogical tool for. Now grab the pencil with the magnets on them and place it over the four magnets with the pointy side of the pencil touching the plastic divider. But that does not answer the question about magnetic levitation being a good vibrational insulator or not. This method can be faster than wheeled mass transit systems, potentially reaching velocities comparable to turboprop and jet aircraft 900kmh, 559 mph.
Magnetic levitation technology is used in systems such as maglev trains and electromagnetic cranes. A simple example of a mechanical con guration exhibiting magnetic levitation is presented and analyzed. At any given point in a magnets magnetic field, the field has a magnitude or strength and direction. This increases efficiency, reduces maintenance costs, and increases the useful life of the system. The system levitates a broken pencil attached the magnets with a glob of electrical. A detailed description about the balance between magnetic force and gravity in experiments like this can be found figure 2. Recently, engineers have used magnets to create maglev short for magnetic levitation trains. Levitation is no longer magic as we observe the physics behind magnets. With strong enough magnets, it is possible to diamagnetically repel graphite against the force of gravity, so that the graphite levitates. From the ones on the fridge, the speakers in your car, and propelling high speed trains, magnets are being used constantly.
Why does the compass always seem to point in one direction only. First, the trains velocity induces a current in the track. Magnetic levitation transportation has many advantages over the conventional trains. The kit is easy to assemble, but initial performance of the device is intentionally poor. Along certain mediumrange routes usually 320 to 640 km 200 to 400 mi, maglev can compete favorably with highspeed rail and airplanes. Magnetic levitation trains and conventional trains. Maglev 1 magnetic levitation experiment quanser consulting inc. Principle of magnetic levitation the 8 figured levitation coils are installed on the sidewalls of the guideway. Maglev trains are one of the classic examples of the application of magnetic levitation. Be sure to check out our article about diamagnetism and levitation. How it works the quanser magnetic levitation maglev device is a single degree. Magnetic levitation is a highly advanced technology. With maglev, a vehicle is levitated a short distance away from a guide way using magnets to. Magnetic levitation wind turbine maximum overall efficiency of windmill is 30%.
The con guration uses a pencil which stays horizontally in midair under the action of magnetic forces, gravity and contact forces at one tip. Research is also being done to use magnetic control technology for contactless, highprecision positioning of wafers in photolithography. Of the types of magnetic levitation systems proposed, electromagnetic attraction systems are currently the most widely. A simple project to demonstrate magnetic levitation uses six ring magnets, a pencil and some modeling clay. Sharpened pencil or wooden dowel rod that will fit in the ring magnets. Levitating magnets gk12 program university of houston. Apr 10, 2011 magnetic levitation wind turbine maximum overall efficiency of windmill is 30%. Magnets are used in a wide variety of household objects, including headphones, televisions, computer disks, and refrigerator magnets.
Education is one of the key focus areas for tata trusts. The direction of the magnetic force which compensates the lead. In this process an object is suspended above another with no other support but magnetic fields. Electromagnetic suspension and electrodynamic suspension are only two types of magnetic levitation and many other forms exist and even more are still likely to be developed. Request pdf how to simply demonstrate diamagnetic levitation with. Now take the plastic divider and stick it on one side of the four magnets. The two primary issues involved in magnetic levitation are lifting forces. Magnetic force is used to counteract the effects of the gravitational acceleration and any other accelerations the two primary issues involved in magnetic levitation are lifting forces.
Maglev derived from magnetic levitation is a system of train transportation that uses two sets of magnets, one set to repel and push the train up off the track, and another set to move the elevated train ahead, taking advantage of the lack of friction. Magnetic levitation impress your friends with this cool floating pencil trick. Manipulating magnetic fields and controlling their forces can levitate an object. Oct 01, 2018 this work describes the development of magnetic levitation maglev using ring magnets and a configuration which we call axial maglev to remove the physical barriers to physical sampling in the magnetic field present in standard maglev and to simplify the procedures used to carry out densitybased analyses, separations, and manipulations. Ever heard about maglev trains and wondered how they move in the air.
Magnetic levitation is a way of using electromagnetic fields to levitate objects without any noise. Explore all your favorite topics in the slideshare app get the slideshare app to save for later even offline. When the bar magnets repel each other on the inside of the cup, the magnetic. Magnetic levitation or maglev is a method by which an object is suspended in air with the support of magnetic field. The fields are used to reverse or counteract the gravitational pull and any other counter accelerations. This pencil spins, levitates and writes this work was supported by iucaa and tata trust.1350 933 785 826 487 1500 9 143 458 197 1333 1027 794 1480 1427 819 671 1639 1583 1479 1173 76 1368 1027 958 743 903 885 1035 1353 565