...any solid object placed within a moderate distance of the eyes, Professor Wheatstone asked himself, ' What would be the ' visual effect of simultaneously presenting to each eye, instead ' of the object kself, its projection on a plane surface, as it ' appears to that eye? ' and the stereoscope was devised...

...the two retinae, Mr Wheatstone goes on to inquire into the visual effect of presenting to the eyes, instead of the object itself, its projection on a plane surface as it appears to each eye separately. To pursue this inquiry, means must be employed to make the two pictures, which...

...philosopher. The inquiry occurred to him, " What would be the visual effect of presenting simultaneously to each eye, instead of the object itself, its projection on a plane surface as it appears to that eye ?" For example, what would be the effect of presenting the plane representation A of a cube to the...

...the two retinae, Mr. Wheatstone inquired what would be the visual effect of presenting simultaneously to each eye instead of the object itself its projection on a plane Fig. 305. surface as it appears to that * eye? For this purpose he imagined an instrument which he...

...object of three dimensions, by means of the two dissimilar pictures projected by it on the two retinae, the following question occurs :—What would be the...projection on a plane surface as it appears to that eye? Under the ordinary circumstances of vision, the object is seen at the concourse of the optic axes,...

...phenomena, elicited by means of the experiment we have been considering, Mr. Wheatstone is led to inquire, " What would be the visual effect, of simultaneously...presenting to each eye, instead of the object itself, a projection on a plain surface, as it appears to that eye ? and the next step consists, in viewing...

...solidity (or relief) of objects adjacent to the sight. The problem he set himself to investigate was : ' What would be the visual effect of simultaneously...projection on a plane surface as it appears to that eye ? ' and in order to bring this question to the test of experiment, he devised an instrument which he...

...solidity (or relief) of objects adjacent to the sight. The problem he set himself to investigate was : ' What would be the visual effect of simultaneously...projection on a plane surface as it appears to that eye ? ' and in order to bring this question to the test of experiment, he devised an instrument which he...

...solidity (or relief) of objects adjacent to the sight. The problem he set himself to investigate was : ' What would be the visual effect of simultaneously...projection on a plane surface as it appears to that eye ? ' and in order to bring this question to the test of experiment, he devised an instrument which he...

...dissimilar pictures projected by it on the two retinae, the following question occurs : What would he the visual effect of simultaneously presenting to...pursue this inquiry it is necessary that means should he contrived to make the two pictures, which must necessarily occupy different places, fall on similar...