objective prisms

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• Advanced Camera for Surveys — The Advanced Camera for Surveys (ACS) is a third generation axial instrument aboard the Hubble Space Telescope (HST). The initial design and scientific capabilities of ACS were defined by a team based at Johns Hopkins University. ACS was… …   Wikipedia

• Binoculars — Binocular telescopes, or binoculars (also known as field glasses), are two identical or mirror symmetrical telescopes mounted side by side and aligned to point accurately in the same direction, allowing the viewer to use both eyes (binocular… …   Wikipedia

• optics — /op tiks/, n. (used with a sing. v.) the branch of physical science that deals with the properties and phenomena of both visible and invisible light and with vision. [1605 15; < ML optica < Gk optiká, n. use of neut. pl. of OPTIKÓS; see OPTIC,… …   Universalium

• binocular — binocularity, n. binocularly, adv. /beuh nok yeuh leuhr, buy /, n. 1. Usually, binoculars. Also called pair of binoculars, prism binoculars. an optical device, providing good depth effect, for use with both eyes, consisting of two small… …   Universalium

• microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …   Universalium

• Optical telescope — Eight Inch refracting telescope (Chabot Space and Science Center) An optical telescope is a telescope which is used to gather and focus light mainly from the visible part of the electromagnetic spectrum for directly viewing a magnified image for… …   Wikipedia

• Optical mineralogy — A petrographic microscope, which is an optical microscope fitted with cross polarizing lenses, a conoscopic lens, and compensators (plates of anisotropic materials; gypsum plates and quartz wedges are common), for crystallographic analysis.… …   Wikipedia

• Differential interference contrast microscopy — Micrasterias furcata imaged in transmitted DIC microscopy. Differential interference contrast microscopy (DIC), also known as Nomarski Interference Contrast (NIC) or Nomarski microscopy, is an optical microscopy illumination technique used to… …   Wikipedia

• Periscope — For the 1916 French film, see Le périscope. Principle of the periscope. The periscope on the left uses mirrors whereas the right uses prisms. a Mirrors b Prisms c Observer s eye …   Wikipedia

• comparison microscope — noun : an apparatus consisting essentially of a pair of microscope objective lenses and tubes connected by prisms in such a way that images from both may be viewed side by side through a single ocular lens * * * Optics. a microscope having two… …   Useful english dictionary

• Dispersion staining — Contents 1 Dispersion Staining 1.1 Becke Line Dispersion Staining 1.2 Oblique Illumination Dispersion Staining 1.3 Darkfield Illumination Dispersion Staining …   Wikipedia