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magic lantern
The magic lantern or Lanterna Magica was the ancestor of the moern slide projector.
Trivia about magic lantern
Invented in the 17th C., it was a predecessor of the modern slide projector
(Sofia of the Clue Crew) 17th century thinker Athanasius Kircher is credited with inventing this device that projected pictures onto a wall
A stereopticon uses 2 of these, an early type of film projector