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Updated: August 21, 2024
After dinner he went to his own room; while Valentine and the ladies sat round the fire in the orthodox Christmas manner, and after a good deal of discursive conversation, subsided into the telling of ghost-stories. George Sheldon sat apart from the circle, turning over the books upon the table, or peering into a stereoscope with an evident sense of weariness.
Emerson, but announced that his call was upon Miss Ellen. Unfortunately, she had gone to bed, but he remained for a time talking with my sister Edith and me, the school-mates of his children. To cover his shyness he took up a stereoscope on the centre-table and began to look at the pictures. After looking at them for a time he asked where those views were taken.
As photography permitted of easily making identical images, but with different perspective, it contributed greatly to the dissemination of the apparatus. The stereoscope, such as we know it, presents the inconvenience of being incapable of being used by but one person at once. Several inventors have endeavored to render the stereoscopic images visible to several spectators at the same time.
Thus, in the stereoscope, an arrangement of lenses and mirrors, two photographs of the same object taken from different points are so combined as to make the object stand out with a solid aspect. Sir David Brewster improved the stereoscope by dispensing with the mirrors, and bringing it into its existing form.
By its rotation the sun itself offers opportunities for bringing the stereoscope to bear upon it. Two pictures, taken at an interval of twenty-six minutes, show just the amount of difference needed to give, by their combination, the maximum effect of solidity.
He had a great deal of trouble to do it ... at last he succeeded. He fairly shuddered when through the glass he looked upon her figure, with the semblance of corporeal solidity given it by the stereoscope. But the figure was grey, as though covered with dust ... and moreover the eyes the eyes looked always to one side, as though turning away.
The stereoscope thus illustrates clearly that the knowledge of the flat character of pictures by no means excludes the actual perception of depth, and the question arises whether the moving pictures of the photoplay, in spite of our knowledge concerning the flatness of the screen, do not give us after all the impression of actual depth.
The same journal in its issue of April 1, 1896, shows an Edison fluoroscope in use by an observer, in the now familiar and universal form somewhat like a stereoscope. This apparatus as invented by Edison consists of a flaring box, curved at one end to fit closely over the forehead and eyes, while the other end of the box is closed by a paste-board cover.
Dana's pen, are pregnant with great significance, and their meaning is brought out by taking a little thought, as the leaves and sticks and stones and pigmy men and women in the shady corners of the stereograph are developed into the seeming proportions of real life, when the images in the focus of the lenses of the stereoscope.
It made the wonderful story of Joseph and Moses not a mere narrative in a book, but a living reality standing out from the far past like a view in a stereoscope. Every time I passed it and I did so at all hours I paused to enter into this reverie of the olden time.
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