field glasses - definition. What is field glasses
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%ما هو (من)٪ 1 - تعريف

PAIR OF TELESCOPES MOUNTED SIDE-BY-SIDE
Field glass; Binocular instrument; Field Glasses; Field glasses; Binocular Instrument; Binocs; Binocular telescope; Prism binoculars; Phase correction coating; Binoc; Periscope binoculars
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  • Porro type, external eyepiece bridge central-focusing binoculars with a rotating diopter on the right eyepiece allowing to adjust refractive differences between the viewer's left and right eyes
  • Galilean binoculars
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  • Binoculars with red-colored multicoatings
  • Double Porro prism design
  • A simulated view of how the [[Andromeda Galaxy]] (Messier 31) would appear in a pair of binoculars
  • Binoculars with adjustable interpupillary distance set for about 63 mm
  • Vector series laser rangefinder 7×42 binoculars can measure distance and angles and also features a 360° digital compass and class 1 eye safe filters
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  • The small exit pupil of a 25×30 telescope and large exit pupils of 9×63 binoculars suitable for use in low light
  • A quarter-wavelength (λ) thick anti-reflection coating, which leads to destructive interference
  • Schmidt–Pechan "roof" prism design
  • Independent focusing binoculars as used by the British military
  • [[Tower Optical]] coin-operated binocular tower viewers
  • US Naval ship 'Big eyes' 20×120 binoculars in fixed mounting
  • 25&nbsp;×&nbsp;150 binoculars adapted for astronomical use
  • 7×50 marine binoculars with dampened [[compass]]

field glasses         
¦ plural noun binoculars for outdoor use.
field glasses         
n. to focus, train field glasses on
field glasses         

ويكيبيديا

Binoculars

Binoculars or field glasses are two refracting telescopes mounted side-by-side and aligned to point in the same direction, allowing the viewer to use both eyes (binocular vision) when viewing distant objects. Most binoculars are sized to be held using both hands, although sizes vary widely from opera glasses to large pedestal-mounted military models.

Unlike a (monocular) telescope, binoculars give users a three-dimensional image: each eyepiece presents a slightly different image to each of the viewer's eyes and the parallax allows the visual cortex to generate an impression of depth.

أمثلة من مجموعة نصية لـ٪ 1
1. The rest of us sit about as far above the action as if we were in a NASA shuttle, peering down through our field glasses.