Retention of vision is a
conjuring
Conjuration or Conjuring may refer to:
__NOTOC__ Concepts
* Conjuration (summoning), the evocation of spirits or other supernatural entities
** Conjuration, a school of magic in ''Dungeons & Dragons''
* Conjuration (illusion), the performance of s ...
term referring to the
perceived image of an object during a vanish (usually associated with vanishing coins). In a
retention of vision vanish
In the retention of vision vanish, the magician places a coin or small object between the fingers and the thumb of the right hand. The left hand is palm up with the palm slightly tilted towards the audience. The right approaches and displays the o ...
, the spectator sees a coin placed on a palm and as the fingers are closed around the coin it is secretly removed, but because the retina still retains a fleeting image of the coin for a fraction of a second, the spectator will be convinced that the coin was placed in the hand, when in fact it wasn't. It works due to the phenomenon known as persistence of vision, which is in wide use in animation and related fields too.
Magic (illusion)
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