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In aerodynamic levitation, the levitation is achieved by floating the object on a stream of gas, either produced by the object or acting on the object. For example, a ping pong ball can be levitated with the stream of air from a vacuum cleaner set on "blow" - exploiting the Coandă effect which keeps it stable in the airstream.
A levitation illusion is one in which a magician appears to defy gravity by making an object or person float in the air. The subject may appear to levitate unassisted, or it may be performed with the aid of another object (such as a silver ball floating around a cloth) in which case it is termed a "suspension".
Since crystal nucleation is suppressed by levitation, and since it is not limited by sample conductivity (unlike electromagnetic levitation), aerodynamic levitation can be used to make glassy materials, from high temperature melts that cannot be made by standard methods. Several silica-free, aluminium oxide based glasses have been made. [2] [3] [4]
In the book Calling on Dragons (Book three of the Enchanted Forest Chronicles), the witch Morwen uses a flying potion on a straw basket and a broomstick, not on herself. In E. L. Konigsburg's Jennifer, Hecate, Macbeth, William McKinley, and Me, Elizabeth, two characters try to make a flying ointment.
David Copperfield has performed a levitation illusion in several magic shows since 1992 in which he appears to fly on stage for several minutes, while surrounded by audience members. The flight is notable for its graceful motion and unencumbered appearance.
Magnetic levitation can be stabilised using different techniques; here rotation (spin) is used. Magnetic levitation (maglev) or magnetic suspension is a method by which an object is suspended with no support other than magnetic fields. Magnetic force is used to counteract the effects of the gravitational force and any other forces. [2]
Image credits: Willyyz "Hacktivist" group Anonymous describes a glitch in the matrix as "moments when our perception of reality falters, hinting that our world might not be as solid and ...
Levitation is the process by which an object is held aloft, without mechanical support, in a stable position. This category is for articles directly related to the physics and science of physical (non- illusionary ) levitation (i.e.: magnetic levitation ).