Aperture
111Aperture Correction — WikiV Compensation for the loss in sharpness of detail because of the finite dimensions of the image elements or the dot pitch of the monitor …
112aperture fluorescent lighting — A scanner design that uses a fluorescent light source with a narrow unfrosted strip that lets brighter light pass through with each scan, boosting the accuracy of the captured data …
113aperture plate — noun : a smooth plate that establishes the film plane in a motion picture camera or projector and that has a rectangular opening defining the margins of the picture area as recorded or projected …
114aperture vignette — noun : mask 2d(1) …
115aperture synthesis — noun : a technique in radio astronomy in which two or more radio telescopes are varied in position and spacing to simulate a large telescope having a collecting area with a diameter approximately equal to the largest spacing between the smaller… …
116aperture mask — Television. See shadow mask …
117Numerical 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… …
118Synthetic aperture radar — (SAR) is a form of radar in which the highly directional (and thus very large) rotating antenna used by conventional radar is replaced with many low directivity small stationary antenna positions scattered over some area near or around the target …
119Tactical 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… …
120Angular aperture — The angular aperture of a lens is the apparent angle of the lens aperture as seen from the focal point::a = 2 arctan left( frac {D/2} {f} ight)where :f is the focal length:D is the diameter of the aperture. Relation to numerical aperture In a… …
