the belief in magical spells that harness occult forces or evil spirits to produce unnatural effects in the world
Magic that relies on selling one's soul to the Prince of Darkness instead of sleight of hand.
A principle that states that anything painted black cannot be seen when placed against a black background.
Conjuring technique of concealing objects using black covers against a black background. Also used by fraudulent mediums. Last updated:March 21, 2006