aperture disc

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• 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

• Blu-ray Disc — Blue ray redirects here. For the fish of the same name, see Neoraja caerulea. Blu ray Disc Media type …   Wikipedia

• Optical disc — Optical media redirects here. For transmission media for light, see Medium (optics). The optical lens of a compact disc drive. In computing and optical disc recording technologies, an optical disc is a flat, usually circular disc which encodes… …   Wikipedia

• Comparison of high definition optical disc formats — This article is about comparative HD optical disc formats. For a history of the Blu ray/HD DVD format war, see High definition optical disc format war. This article compares the technical specifications of multiple high definition formats,… …   Wikipedia

• Compact Disc manufacturing — A compact disc in its jewel case. Compact disc manufacturing is the process by which commercial compact discs (CDs) are replicated in mass quantities using a master version created from a source recording. This may be either in audio form (CD… …   Wikipedia

• Professional Disc — (PFD) is a recordable optical disc format introduced by Sony in 2003 primarily for its new tapeless recording system, XDCAM. It was one of the first two formats (along with Ultra Density Optical) to utilize blue violet lasers for reading and… …   Wikipedia

• Compact disc manufacturing — is the process by which commercial compact discs (CDs) are replicated in mass quantities using a master version created from a source recording. This may be either in audio form (CD Audio) or data form (CD ROM). This process is used in the… …   Wikipedia

• Rotary disc shutter — part of the time. The other part of the time the mirror allows the light to pass on to the film. On simple cameras this shutter is fixed and usually semi circular. On more advanced cameras the shape of the shutter can be adjusted. This shutter… …   Wikipedia

• Airy disc — /air ee/, Optics. the bright central part of the diffraction pattern of light from a point source that is diffracted by a circular aperture. [named after Sir George Biddel Airy (1801 92)] * * * …   Universalium

• Airy disc — /air ee/, Optics. the bright central part of the diffraction pattern of light from a point source that is diffracted by a circular aperture. [named after Sir George Biddel Airy (1801 92)] …   Useful english dictionary

• Trionic T5.2 — The Trionic T5.2 was introduced in Saab 9000 year 1993 and was discontinued the same year. Its Engine Control Unit is based on a Motorola 32 bit CPU. This engine management system was used on the long block engines. Its was superseded by Trionic… …   Wikipedia