Figure 1.3

Walgensten’s Thaumaturgic Lantern

Referring to the illustrations printed in the first edition of his Ars magna lucis et umbræ, Kircher acknowledges that Walgensten, “by reworking my ideas in those descriptions, produced a better form of the [magic] lantern.” Interestingly, there are two errors in Kircher’s rendering of Walgensten’s device: (1) the images on the slide should be inverted, and (2) the lens protruding toward the light source should be in front of the glass slide, directed toward the projected image.

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