Magnetic levitation

Magnetic levitation, maglev, or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic pressure is used to counteract the effects of the gravitational and any other accelerations. Earnshaw's theorem proves that using only ferromagnetic or paramagnetic materials it is impossible to stably levitate against gravity; however, servomechanisms, the use of diamagnetic materials, superconduction, or systems involving eddy currents allow to achieve that. In some cases the lifting force is provided by magnetic levitation, but there is a mechanical support bearing little load that provides stability. Magnetic levitation is used for maglev trains, magnetic bearings and for product display purposes. Lift[edit] Magnetic materials and systems are able to attract or press each other apart or together with a force dependent on the magnetic field and the area of the magnets, and a magnetic pressure can then be defined. where Stability[edit]

Scientists Use Sound Waves To Levitate And Manipulate Matter April 8, 2014 - A team of researchers in Switzerland have developed a way of levitating and transporting small objects using nothing but sound. Using ultrasonic waves that is, sound waves whose frequencies are too high for humans to hear, scientists at the Swiss Federal Institute of Technology in Zurich have made water droplets, instant coffee crystals, styrofoam flakes, and a toothpick, among other objects, hang in mid air, move along a plane, and interact with each other. It is the first time that scientists have been able to use sound to simultaneously levitate several objects next to each other and move them around. >As anyone with a subwoofer and a teenager knows, sound waves exert pressure. When those waves are bounced between carefully aligned surfaces, they can create what is known as a standing wave, in which the total pressure from the original wave and its reflection cancel each other out.

WTF | Oddity Central - Collecting Oddities - Part 6 Sadhu Amar Bharati is an Indian holy man who claims he has kept his right hand raised in the air since 1973. Now, 38 years later, his hand is just a useless piece of skin and bone, but has become a symbol for Shiva worshipers around India. Until 1970, Amar Bharati was an average middle-class man who lived a normal life. Other sources claim Amar Bharati felt disillusioned by all the fighting going on in the world, and decided to raise his right arm for peace.