aperture size

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

• Aperture synthesis — or synthesis imaging is a type of interferometry that mixes signals from a collection of telescopes to produce images having the same angular resolution as an instrument the size of the entire collection. At each separation and orientation, the… …   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 (disambiguation) — An aperture is an opening, in particular one whose size determines what can or cannot pass through. The term can in particular refer to:*Aperture of an optical system, the opening that limits the amount of light that can pass through *Aperture… …   Wikipedia

• aperture — [[t]æ̱pə(r)tʃə(r)[/t]] apertures 1) N COUNT An aperture is a narrow hole or gap. [FORMAL] Through the aperture he could see daylight. 2) N COUNT In photography, the aperture of a camera is the size of the hole through which light passes to reach… …   English dictionary

• aperture — (f/number)    Lens opening. The opening in a lens system through which light passes.The size of aperture is either fixed or adjustable. Lens openings are usually calibrated in f numbers …   Forensic science glossary

• aperture —    An opening. In photography, the circular hole in the front of the camera lens which controls the amount of light allowed to pass on to the film from the lens. On all but very inexpensive cameras the size of the aperture is variable. The degree …   Glossary of Art Terms

• aperture\/exposure — TV A setting that manipulates the amount of light falling onto the camera s CCD(s). This control adjusts the size of the camcorder s iris …   Audio and video glossary

• Dynamic aperture — is a term in acoustics used very much like aperture in photography. The arrays in side scan sonar can be programmed to transmit just a few elements at a time or all the elements at once. The more elements transmitting, the narrower the beam and… …   Wikipedia

• Numerical aperture — The numerical aperture with respect to a point P depends on the half angle θ of the maximum cone of light that can enter or exit the lens. In optics, the numerical aperture (NA) of an optical system is a dimensionless number that characterizes… …   Wikipedia

• Tactical Synthetic Aperture Radar — The Tactical Synthetic Aperture Radar (TSAR) is a new radar system introduced on the MQ 8B Fire Scout unmanned aerial vehicle. It delivers high resolution, wide area radar images day or night, and in all weather conditions. TSAR systems take… …   Wikipedia