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Updated: June 21, 2025
His chief scientific interest was optics, and he invented the kaleidoscope, and improved Wheatstone's stereoscope by introducing the divided lenses. In 1815 he was elected a member of the Royal Society, and, later, was awarded the Rumford gold and silver medals for his discoveries in the polarisation of light. In 1831 he was knighted.
On the other hand, no sooner did he awake than she again entered his room, and there she remained, as though she had been its owner; just as though she had purchased for herself that right by her voluntary death, without asking him or requiring his permission. He took her photograph; he began to reproduce it, to enlarge it. Then it occurred to him to arrange it for the stereoscope.
Though, indeed, even if I did see something, it too might be a hallucination of the sight.... He lighted the candle, however, and in a rapid glance, not without a certain dread, scanned the whole room ... and saw nothing in it unusual. He got up, went to the stereoscope ... again the same grey doll, with its eyes averted. The feeling of dread gave way to one of annoyance.
"The telescope," returned Heliobas, "is merely an aid to the human eye; and, as I told you before, nothing is so easily deceived as our sense of vision, even when assisted by mechanical appliances. The telescope, like the stereoscope, simply enables us to see the portrait of the Moon more clearly; but all the same, the Moon, as a world, does not exist.
He holds the mirror up to Nature, paralyzes the fleeting phantom, by chemical subtilty, on the burnished plate, and there it is fixed forever. He prepares the optical illusion of the stereoscope, so that through tiny windows we may look as into fairy-land and find sections of this magnificent world modelled in miniature. Once men imagined the earth to be a flat and limited tract.
We perceive a diffused image upon the screen with the naked eye, but as soon as we use one special eye-glass the relief appears with as much distinctness as in the best stereoscope. There is then produced, especially with certain images, a very curious effect of reversed perspective, the background coming to the front.
I refer to the apparent transfer of impressions from one retina to the other, to which I have given the name reflex vision. The idea was suggested to me in consequence of certain effects noticed in employing the stereoscope.
With respect to the former, it is said that artists will find it very serviceable in copying statuary groups; and a suggestion has already been made, to adapt it to the purposes of microscopic observation, as the objects examined will be seen much more accurately under the extraordinary relief produced by the stereoscope, than by the ordinary method.
The arrangement which effects it will be a stereoscope, according to our definition of that instrument. How shall we attain these two ends? An artist can draw an object as he sees it, looking at it only with his right eye. Then he can draw a second view of the same object as he sees it with his left eye.
It may be said offhand that even the complete appearance of depth such as the stereoscope offers would be in no way contradictory to the idea of moving pictures. Then the photoplay would give the same plastic impression which the real stage offers. All that would be needed is this. When the actors play the scenes, not a single but a double camera would have to take the pictures.
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