Magnetic levitation is a way to suspend objects in air without any support, as if in defiance of gravity. Keep it long if you can to make a few of the later steps a bit easier. Magnetic levitation maglev or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Physics project on magnetic levitation and its applications. Education is one of the key focus areas for tata trusts. The pencil is levitated in the air due to balancing of forces. Magnetic levitation is a highly advanced technology. Magnetic levitation maglev or magnetic suspension is a method by which an object is. Levitating magnets gk12 program university of houston. The direction of the magnetic force which compensates the lead. The pencil levitates in a horizontal position, as shown. We have developed a new magnetic levitation project option for fulfilling the.
One electromagnet pole faces a black post upon which a 2. The video below gives a demonstration of the diamagnetic effects of pencil leads, including levitation over an array of neodymium magnets. Feb 17, 20 graphite pencil lead is one of the most common diamagnetic solids. The levitation station is the part that houses the majority of the magnets.
Lithium showed you that pyrolytic graphite was diamagnetic, and that it could be stably levitated over magnets. The magnetic levitation technology can be used as an efficient. Try to rotate the pencil in a circular motion while it is in the levitated position. Magnetic levitation transportation has many advantages over the conventional trains. The physics of magnetic levitation physics 212x spring 2011 john dutton 04122011 magnets make up a huge part of our everyday lives.
Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 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. This pencil spins, levitates and writes this work was supported by iucaa and tata trust. A detailed description about the balance between magnetic force and gravity in experiments like this can be found figure 2. Magnetic levitation project physics project science. In this process an object is suspended above another with no other support but magnetic fields. Principle of magnetic levitation the 8 figured levitation coils are installed on the sidewalls of the guideway. This current then induces a magnetic field that levitates the train. Magnetic levitation principles introduction magnetic fields are used to describe forces at a distance from electric currents. 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 can create frictionless, efficient, faroutsounding technologies. Current projects nclusion introduction maglev, or magnetic levitation, is a system of transportation. The tip of the pencil is in point contact with a vertical plastic disk, cut from a used cd. Explore all your favorite topics in the slideshare app get the slideshare app to save for later even offline.
Highspeed rail has been the solution for many countries. The con guration uses a pencil which stays horizontally in midair under the action of magnetic forces, gravity and contact forces at one tip. If the same windmill is operating at 50% of its maximum speed the efficiency becomes very low. Make a pen balance on its point and spin using the power of magnetism. Magnetic levitation wind turbine maximum overall efficiency of windmill is 30%. The kit is easy to assemble, but initial performance of the device is intentionally poor. Magnets are used in a wide variety of household objects, including headphones, televisions, computer disks, and refrigerator magnets. In this paper the best current magnetic materials, the rare earths and especially the ndfeb alloy, are presented. 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. Be sure to check out our article about diamagnetism and levitation. Dec 21, 20 physics project on magnetic levitation and its applications. The ball elevation from the post is measured using a sensor embedded in the post.
How to simply demonstrate diamagnetic levitation with pencil lead. If you continue browsing the site, you agree to the use of cookies on this website. Now take the plastic divider and stick it on one side of the four magnets. With strong enough magnets, it is possible to diamagnetically repel graphite against the force of gravity, so that the graphite levitates. Magnetic levitation project step by step procedure byjus. A simple example of a mechanical con guration exhibiting magnetic levitation is presented and analyzed. When the onboard superconducting magnets pass at a high speed about several centimeters below the center of these coils, an.
Us4910633a magnetic levitation apparatus and method. This signal is fed back through a levitation constant that is defined by properties of. Maglev research and development began in germany and japan during the early 1970s. This method can be faster than wheeled mass transit systems, potentially reaching velocities comparable to turboprop and jet aircraft 900kmh, 559 mph. Make sure the magnets are spaced an equal distance apart. When the poles are labeled we will be ready to create the conditions under which the levitation can take place. Magnetic levitation impress your friends with this cool floating pencil trick.
The common point in all applications is the lack of contact and thus no wear and friction. Lowcost magnetic levitation project kits for teaching feedback. Maglev trains are one of the classic examples of the application of magnetic levitation. Static magnetic levitation demonstration arvindguptatoys. Have the kids attach four of the ring magnets to a flat surface with some modeling clay. Take this setup and put one of the ring magnets into the pencil. In another wellknown arrangement, a small neodymium magnet levitates between pyrolytic graphite or bismuth. This kit is based on a lowcost design developed in 4, which uses proportional. Permanent magnetic levitation and stability springerlink. May 18, 2017 how to make levitating pencil using magnet. Magnetic force is used to counteract the effects of the gravitational acceleration and any other accelerations. In this science video tutorial, youll learn how to levitate plain old pencil lead this time. Discover how maglev trains work using magnetic levitation. From the ones on the fridge, the speakers in your car, and propelling high speed trains, magnets are being used constantly.
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. Highspeed movement is a result of magnetic levitation while propulsion is provided by the fine placement of electromagnets in the form of coils. How to simply demonstrate diamagnetic levitation with. When assembled as described, the system exhibits high sensitivity to initial conditions and considerable visible wobble of the object. Graphite pencil lead is one of the most common diamagnetic solids. Manipulating magnetic fields and controlling their forces can levitate an object. Magnetic levitation transport, or maglev, is a form of transportation that suspends, guides and propels vehicles especially trains via electromagnetic force. If a small permanent magnet is placed above a superconductor, it can be levitated by this repulsive force.
Magnetic levitation technology is used in systems such as maglev trains and electromagnetic cranes. But that does not answer the question about magnetic levitation being a good vibrational insulator or not. Make four holes in the middle of the foam board and stick the magnets in the holes. At any given point in a magnets magnetic field, the field has a magnitude or strength and direction. Recently, engineers have used magnets to create maglev short for magnetic levitation trains. Of the types of magnetic levitation systems proposed, electromagnetic attraction systems are currently the most widely. Make sure the magnets are spaced an equal distance apart and have the same polarity facing up. Jun 24, 2009 this pencil spins, levitates and writes this work was supported by iucaa and tata trust. Since then magnets have been used in many applications. Ever heard about maglev trains and wondered how they move in the air. An unsung phenomenon of the past which is now being put to use in a variety of interesting and useful applications.
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 way of using electromagnetic fields to levitate objects without any noise. Magnetic levitation is the use of magnetic fields to levitate a usually metallic object. The gadget is easy to build from simple material and is an excellent pedagogical tool for. Magnetic levitation magnetic fields are actively excluded from superconductors meissner effect. Practical applications of magnetic levitation technology. The fields are used to reverse or counteract the gravitational pull and any other counter accelerations. Magnetic levitation applications are becoming more prevalent because permanent magnetic materials have improved in recent years, and their intrinsic instability can be conveniently hindered. It is proved that magnetic levitation cannot be obtained just by using static ferromagnetism, as the object would tend to gain instability. Sharpened pencil or wooden dowel rod that will fit in the ring magnets. Why does the compass always seem to point in one direction only. Playing and exploring with some fairly strong magnets is fun in itself. Magnetic levitation is a method by which an object is suspended in the air with no support other than magnetic fields. 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.
Download the seminar report for magnetic levitation. Axial magnetic levitation using ring magnets enables. 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. Impress your friends with this cool floating pencil trick. To create that we will take the modeling clay and stick the pencil into it vertically. This increases efficiency, reduces maintenance costs, and increases the useful life of the system. Request pdf how to simply demonstrate diamagnetic levitation with. If a small magnet is brought near a superconductor, it will be repelled becaused induced supercurrents will produce mirror images of each pole. The student is expected to observe forces, such as magnetism and gravity acting on objects. A simple project to demonstrate magnetic levitation uses six ring magnets, a pencil and some modeling clay.
Research is also being done to use magnetic control technology for contactless, highprecision positioning of wafers in photolithography. The system levitates a broken pencil attached the magnets with a glob of electrical. It employs diamagnetism, which is an intrinsic property of many materials referring to their. Axial magnetic levitation using ring magnets enables simple. Maglev 1 magnetic levitation experiment quanser consulting inc. So, now that the jig is finally finished it is time to make the actual levitation station and magnetic pen. Levitation is no longer magic as we observe the physics behind magnets. Magnetic levitation the need for fast and reliable transportation is increasing throughout the world. It uses pencil lead levitating in a track built from neodymium magnets. Apr 10, 2011 magnetic levitation wind turbine maximum overall efficiency of windmill is 30%. The magnetic field the magnets produce as they repel each other pushes on the pencil from all sides, causing the pencil to stand up. How it works the quanser magnetic levitation maglev device is a single degree. These maglev trains use the attractive and repellant nature of magnets to levitate or float above the tracks.
It was repelled by a magnetic field, and this repulsion was strong enough to levitate it. First, the trains velocity induces a current in the track. When the bar magnets repel each other on the inside of the cup, the magnetic. Magnetic levitation trains and conventional trains. Along certain mediumrange routes usually 320 to 640 km 200 to 400 mi, maglev can compete favorably with highspeed rail and airplanes. The discovery of magnetism dates back to ancient time, when people first noticed that load stones naturally occurring magnetized ore attracted iron pieces. The two primary issues involved in magnetic levitation are lifting forces. Start by cutting a piece of hard wood on the table saw to 1.