couple of drawings by Jacopo Chimenti da Empoli
Sir Charles Wheatstone (1802-1875
in a portrait of 1837.
The idea of \u200b\u200bstereoscopy is very old. Gia Euclid in 200 BC (approximately) including the principles of three-dimensional vision: each of our eye perceives a slightly different and the other is the combination of the two images to give the perception of the third dimension. Legend has it that Euclid noticed the difference in perception between the two eyes looking at the right index finger alternating occlusion of the two eyes (legend likely, as anyone learns in childhood the difference with this little game).
In 1584 Leonardo da Vinci studied the perception of depth (even if its purpose was more related to theorize about the principles of perspective drawing). Giovanni Battista della Porta (1538-1615) produced the first artificial three-dimensional design and Jacopo Chimenti da Empoli (1554-1640) made drawings side by side which clearly demonstrate an understanding of binocular vision. The term stereoscopic
is relatively recent, however. It was not until the seventeenth century to find in literature the term, in 1613 the Jesuit Francois d'Aguillion (1567-1617) coined it in his treatise the neologism "stéréoscopique. As mentioned
intuition of stereoscopy has ancient origins. But the same is not true of his theory.
and 1883 when Professor Sir Charles Wheatstone shows that, with two slightly different designs side by side and watching them through a system of mirrors and prisms can be produced artificially, the effect of three-dimensional view and in June 1838, illustrating the binocular vision at the Royal Scottish Society of Arts, proposed to name the device "Stereoscope," to indicate the ability to represent solid figures "(the word is composed of two Greek words stereos, solid, and scopos, looking).
In 1844, Sir David Brewster (who in 1816 had patented the kaleidoscope, from the greek kalos, beautiful, eidos, shape, and scopos, looking) brought improvements to the stereoscope.
was the interest of Queen Victoria, shown from the Great Exhibition of London of 1851, which made it very popular stereoscopy: in 1856, according to Brewster, were already sold half a million of its stereoscopic, despite the cost was very high.
The American Oliver Wendell Holmes made a cheaper version of the device, made of aluminum, allowing the spread of large quantities of stereo images, mounted on cardboard.
fashion to collect stereo images continued until the First World War, which in fact was documented by different groups of photographers with stereo photography equipment.
1856, JB Dancer:
first camera with two goals
A number of companies specialized in the production of stereo images and viewers, the most famous of these was the American View-Master, founded in the late '30s. Today
fascination with stereoscopic vision is a bit 'faded, probably because the techniques of the stereoscope are not well suited to the cinematic vision, and the production of films and television programs are not mixed with these display systems.
must be said though that even today retain the stereoscopic images in a particular collective fascination, is demonstrated not only the various "cinema 3d" has a bit 'all over the world, but also the fact that after the famous collapse of the twin towers were circulating in network stereoscopic images of the event to "see live "the catastrophic event.
The famous collapse of the twin towers in the form of anaglyph 
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