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The electrotachyscope is an 1887 invention of Ottomar Anschütz of Germany which presents the illusion of motion with transparent serial photographs, chronophotographs, arranged on a spinning wheel of fortune or mandala-like glass disc, significant as a technological development in the history of cinema.
A Geissler Tube was used to flash light through the transparancies to provide a weak projection to a single person or small audience through a small window.
It was presented for public demonstration at the Chicago World's Fair of 1893.
An earlier, related device is described in the January 24, 1878 issue of the journal Nature.
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