Sir Charles Wheatstone created the first stereoscopes, both with reflecting mirrors and with refracting prisms, in 1832, and optician R. Murray built them for him. A stereoscope is a tool used to view a pair of distinct stereoscopic images—left- and right-eye views of the same scene—as a single, three-dimensional image. For a person with normal binocular depth perception, the edges of the two pictures appear to merge into one "stereo window" because a stereoscope gives each eye a lens that enlarges and distances the image seen through it while simultaneously shifting its apparent horizontal position. Currently, the photographs are produced to make the scene appear to be outside of this fictitious window, through which things are occasionally permitted to emerge, but historically, this was not the case.To prevent one eye from becoming distracted by seeing the image intended for the other eye, a divider or other view-limiting element is typically offered. Collectible Item has some slight wear and a crack on the side.
Dimensions: 145 x 323 x 210H mm
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