entrance aperture

entrance aperture
входная апертура

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  • Entrance pupil — For the part of the eye, see Pupil. A camera lens adjusted for large and small aperture. The entrance pupil is the image of the physical aperture, as seen through the front of the lens. The size and location may differ from those of the physical… …   Wikipedia

  • aperture — apertural /ap euhr choor euhl/, adj. apertured, adj. /ap euhr cheuhr/, n. 1. an opening, as a hole, slit, crack, gap, etc. 2. Also called aperture stop. Optics. an opening, usually circular, that limits the quantity of light that can enter an… …   Universalium

  • Aperture — For other uses, see Aperture (disambiguation). f stops demonstrated on a lens …   Wikipedia

  • Entrance to the mastoid antrum — Infobox Anatomy Name = PAGENAME Latin = aditus ad antrum mastoideum GraySubject = 230 GrayPage = 1042 Caption = The medial wall and part of the posterior and anterior walls of the right tympanic cavity, lateral view. Caption2 = Coronal section of …   Wikipedia

  • entrance — I (New American Roget s College Thesaurus) n. entry, ingress, entrée, incoming, ingoing; debut, induction; admission, access, admittance, approach; aperture, door, lobby, gate, portal, way, opening; beginning, start, commencement, introduction;… …   English dictionary for students

  • entrance — Synonyms and related words: access, adit, admission, admittance, air lock, anesthetize, aperture, appearance, approach, arrival, attract, becharm, beginning, beguile, bewitch, captivate, carry away, cast a spell, channel, charm, coming, coming in …   Moby Thesaurus

  • entrance pupil — Optics. the image of the aperture viewed from the objective of an optical system limiting the rays that enter the system. Cf. exit pupil. * * * …   Universalium

  • aperture — 1. An inlet or entrance to a cavity or channel. in anatomy, an open gap or hole. SEE ALSO: fossa, ostium, orifice, pore. 2. The diameter of the objective of a microscope. SYN …   Medical dictionary

  • aperture — n opening, hole, eye, eyelet, eyehole, peephole, pinhole, puncture, perforation, interstice, pore, bore, airhole, spiracle; slit, crack, gash, vent, slot, rent, foramen; chink, cleft, cranny, rift, crevice, fissure, Archaic. scissure; gap, break …   A Note on the Style of the synonym finder

  • entrance — I n 1. admission, admittance, permission to enter, access, right of entry; entry, entryway, entree, inlet, ingress; approach, ramp, drive, driveway, lane, adit; path, pathway, route, road, roadway, course, way, means; street, avenue, boulevard,… …   A Note on the Style of the synonym finder

  • entrance pupil — noun : the stop in an optical instrument or the virtual image of the stop that determines the angular diameter of the bundle of rays traversing the instrument from a given point in the object space compare exit pupil * * * Optics. the image of… …   Useful english dictionary

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