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Levitation (from Latin levitas, lit. ' lightness ' ) [ 1 ] is the process by which an object is held aloft in a stable position, without mechanical support via any physical contact.
Spin-stabilized magnetic levitation is a phenomenon of magnetic levitation whereby a spinning magnet or array of magnets (typically as a top) is levitated via magnetic forces above another magnet or array of magnets, and stabilised by gyroscopic effect due to a spin rate that is neither too fast, nor too slow to allow for a necessary precession.
In quantum field theory, a ghost, ghost field, ghost particle, or gauge ghost refers to an unphysical state in a gauge theory.These Ghosts are introduced to maintain gauge invariance in theories where the local field components exceeds the number of physical degrees of freedom.
Levitated optomechanics is a field of mesoscopic physics which deals with the mechanical motion of mesoscopic particles which are optically or electrically or magnetically levitated. Through the use of levitation, it is possible to decouple the particle's mechanical motion exceptionally well from the environment.
Levitation (illusion), an illusion where a magician appears to levitate a person or object; Levitation (paranormal), the claimed paranormal phenomenon of levitation, occurring without any scientific explanation; Levitation (physics), the process by which an object is suspended against gravity, in a stable position without solid physical contact
Earnshaw's theorem forbids magnetic levitation in many common situations. If the materials are not hard, Werner Braunbeck 's extension shows that materials with relative magnetic permeability greater than one ( paramagnetism ) are further destabilising, but materials with a permeability less than one ( diamagnetic materials) permit stable ...
Electrodynamic levitation with metallic conductors exhibits a form of diamagnetism, and relative permeabilities of around 0.7 can be achieved (depending on the frequency and conductor configuration). Given the details of the applicable hysteresis loop, frequency-dependent variability of behavior should be of minimal importance for those ...
John Ernst Worrell Keely (September 3, 1837 – November 18, 1898) was an American fraudster and self-proclaimed inventor from Philadelphia who claimed to have discovered a new motive power which was initially described as "vaporic" or "etheric" force, and later as an unnamed force based on "vibratory sympathy", by which he produced "interatomic ether" from water and air.