On the invention of stereoscopic glasses for single pictures : with preliminary observations on the stereoscope, and on the physiology of stereoscopic vision / by T. Wharton Jones.

  • Thomas Wharton Jones
Date:
1860
Catalogue details

Licence: Public Domain Mark

Credit: On the invention of stereoscopic glasses for single pictures : with preliminary observations on the stereoscope, and on the physiology of stereoscopic vision / by T. Wharton Jones. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    indeed, we have shown, is such only as could he seen by viewing at a short distance from the eyes a small but perfect model of the subject. The purpose of the stereoscopic glasses for single pictures is obviously quite distinct from that of the Stereoscope. The sole pretension of the stereoscopic glasses is to add to the beauty of single pictures l)y giving them something of a real stereoscopic effect wdien viewed with both eyes, instead of the mere semblance of such an effect which single pictures present even when viewed otherwise to the best advantage, as they are with one eye alone. In the description above given of the stereoscopic effect of the stereoscopic glasses, it is to be under- stood that I speak princq^ally from what I myself can perceive. The majority of persons who have tried the glasses have described the effect perceived by them in a manner so as to indicate that they perceive it the same as I do. Some persons, on looking through the glasses without being previously aware of their nature, have instantly declared that they perceived a stereoscopic effect; but on reflecting that it was but a single picture they were looking at, they were ready to doubt the correctness of their first impression. One gentleman exclaimed, “ But should there not be two pictures'? ” Other persons, unable at first to realise the effect, have, after a httle observation, perceived it, and declared that “the j:)icture looked more natural.” Other persons again, however, taking their idea of stereoscopic effect literally from the exaggerated appearances in the Stereoscoj3e, have declared that they could perceive no such effect at all. On the same principle that the glasses give a stereoscopic effect to single pictures viewed through them with both eyes, they bring out with increased prominence real objects at some distance, such as the actors on the stage, and, besides increasing the effect
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