light focusing

  • 41photography, technology of — Introduction       equipment, techniques, and processes used in the production of photographs.  The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …

    Universalium

  • 42Gurgen Askaryan — ( hy. Գուրգեն Ասկարյան , ru. Гурген Аскарьян or Гурген Аскарян ) (1928 1997) was a prominent Soviet physicist, famous for his discovery of the self focusing of light. Among his other achievements are the pioneering studies of light matter… …

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  • 43Single-lens reflex camera — The single lens reflex (SLR) camera uses an automatic moving mirror system which permits the photographer to see exactly what will be captured by the film or digital imaging system, as opposed to non SLR cameras where the view through the… …

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  • 44Superlens — A superlens, super lens or perfect lens is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is an inherent limitation in conventional optical devices or lenses.[1] In 2000, a type of lens was proposed,… …

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  • 45History of the single-lens reflex camera — The history of the single lens reflex camera predates the invention of photography in 1826/27 by one and a half centuries with the use of a reflex mirror in a camera obscura first described in 1676. Such SLR devices were popular as drawing aids… …

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  • 46literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …

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  • 47particle accelerator — accelerator (def. 7). [1945 50] * * * Device that accelerates a beam of fast moving, electrically charged atoms (ions) or subatomic particles. Accelerators are used to study the structure of atomic nuclei (see atom) and the nature of subatomic… …

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  • 48Camera — For other uses, see Camera (disambiguation). Various cameras A camera is a device that records and stores images. These images may be still photographs or moving images such as videos or movies. The term camera comes from the camera obscura… …

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  • 49microscope — /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… …

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  • 50Nikon F2 — Photomic (DP 1 prism) Type 35 mm SLR camera Lens mount Nikon F mount Focus manual Exposure manual …

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  • 51Digital single-lens reflex camera — Nikon D700 full frame (FX) digital SLR camera …

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  • 52Binoculars — 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… …

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  • 53Nikkormat — Nikomat Nikomat FT Type 35mm SLR camera Lens mount Nikon F mount Focus manual Exposure Man …

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  • 54Particle accelerator — Atom smasher redirects here. For other uses, see Atom smasher (disambiguation). A 1960s single stage 2 MeV linear Van de Graaff accelerator, here opened for maintenance A particle accelerator[1] is a device that uses electromagnetic fields to… …

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  • 55View camera — The view camera is a type of camera first developed in the era of the DaguerreotypeStroebel, L. D. (1986). View Camera Technique , 5th ed., p. 212. Boston: Focal Press. ISBN 0 240 51711 3] and still in use today, though with many refinements. It… …

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  • 56Eye — For other uses, see Eye (disambiguation), Ocular (disambiguation), Ocular, and Oculus. For taxon specific articles, see human eye, simple eye in invertebrates, mollusc eye, and arthropod eye. Eye …

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  • 57Video camera tube — In older video cameras, before the mid to late 1980s, a video camera tube or pickup tube was used instead of a charge coupled device (CCD) for converting an optical image into an electrical signal. Several types were in use from the 1930s to the… …

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  • 58HEBREW GRAMMAR — The following entry is divided into two sections: an Introduction for the non specialist and (II) a detailed survey. [i] HEBREW GRAMMAR: AN INTRODUCTION There are four main phases in the history of the Hebrew language: the biblical or classical,… …

    Encyclopedia of Judaism

  • 59Olympus OM system — The Olympus OM System was a line of 35mm single lens reflex cameras, lenses and accessories sold by Olympus between 1972 and 2002 (some accessories were sold through early 2003). The system was introduced by Olympus in 1972, more than a decade… …

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  • 60Rollei 35 — The S designates it has a Sonnar 2,8/40mm lens Ilford 35 mm film cartridge for scale.] The Rollei 35 is a 35mm miniature viewfinder camera built by Rollei. The original Rollei 35, when presented to the public at the photokina in 1966, was the… …

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