Discoveries and inventions of the nineteenth century (1905)
Routledge, Robert · London : G. Routledge and Sons · leaf 521
aining the optic axis of his eyes quite parallel. Insuch a case he will observe the stereoscopic effect by the fusing together, asit were, into one sensation, of the impression received by the right eye fromthe right photograph, with that received by the left eye from the left photo-graph. But as… … Fig. 243.— Wheatstones Reflecting Stereoscope. These outside images are, however, very distracting, for the moment theattention is in the least directed to them, the optic axes converge to theone side or the other, losing their parallelism, and the stereoscopic effectvanishes, because the images no…
Inventions
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