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binoculars |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.07 sec. |
binocularsOptical instrument for providing a magnified view of distant objects, consisting of two similar telescopes, one for each eye, mounted on a single frame. In most binoculars, each telescope has two prisms, which reinvert the inverted image provided by the eyepiece of each telescope. Light rays travel along a folded path inside the telescopes, so the instrument has a shorter overall length. The prisms also provide better depth perception at greater distances, by allowing the two objectives (object lenses) to be set farther apart than the eyepieces. Binocular eyepieces are often fitted to microscopes or other optical instruments. |
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As, rounding a dark, wooded point, bathed in fresh air and sunshine, we opened to view a crowd of shipping at anchor lying half a mile ahead of us perhaps, he called me aft from my station on the forecastle head, and, turning over and over his binoculars in his brown hands, said: "Do you see that big, heavy ship with white lower masts? His high-powered rifle was equipped with telescope sights and he also carried binoculars which he was in the act of using as Tarzan discovered him, either to note the effect of his last shot or to discover a new target. And Simon Nishikanta tore himself away from his everlasting painting of all colour-delicacies of sea and sky such as are painted by seminary maidens, to be helped and hoisted up the ratlines of the mizzen rigging, the huge bulk of him, by two grinning, slim-waisted sailors, until they lashed him squarely on the crosstrees and left him to stare with eyes of golden desire, across the sun-washed sea through the finest pair of unredeemed binoculars that had ever been pledged in his pawnshops. |
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binoculars
