light focusing

  • 141electron tube — an electronic device that consists, typically, of a sealed glass bulb containing two or more electrodes: used to generate, amplify, and rectify electric oscillations and alternating currents. Also called electronic tube. Cf. gas tube, vacuum tube …

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  • 142India — /in dee euh/, n. 1. Hindi, Bharat. a republic in S Asia: a union comprising 25 states and 7 union territories; formerly a British colony; gained independence Aug. 15, 1947; became a republic within the Commonwealth of Nations Jan. 26, 1950.… …

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  • 143Business and Industry Review — ▪ 1999 Introduction Overview        Annual Average Rates of Growth of Manufacturing Output, 1980 97, Table Pattern of Output, 1994 97, Table Index Numbers of Production, Employment, and Productivity in Manufacturing Industries, Table (For Annual… …

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  • 144Latin American art — Introduction       artistic traditions that developed in Mesoamerica, Central America, and South America after contact with the Spanish and Portuguese beginning in 1492 and 1500, respectively, and continuing to the present.       This article… …

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  • 145Photographic film — This article is mainly concerned with still photography film. For motion picture film, please see film stock. Photographic film is a sheet of plastic (polyester, nitrocellulose or cellulose acetate) coated with an emulsion containing light… …

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  • 146Science of photography — refers to the use of science, such as chemistry and physics, in all aspects of photography. This applies to the camera, its lenses, physical operation of the camera, electronic camera internals, and the process of developing film in order to take …

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  • 147Cinematography — Cinematographic redirects here. For the 2007 rock album, see Cinematographic (album). Cinematography (from Greek: kinema κίνημα movement and graphein γράφειν to record ) is the making of lighting and camera choices when recording photographic… …

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  • 148Anti-cult movement — The anti cult movement (abbreviated ACM and sometimes called the countercult movement) is a term used by academics and others to refer to groups and individuals who oppose cults and new religious movements. Sociologists David G. Bromley and Anson …

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  • 149Chirped pulse amplification — Diagramatic scheme of chirped pulse amplification. Chirped pulse amplification (CPA) is a technique for amplifying an ultrashort laser pulse up to the petawatt level with the laser pulse being stretched out temporally and spectrally prior to… …

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  • 150The Examined Life — is a collection of philosophical meditations written by Robert Nozick and published in 1989.Having pursued philosophy in an argumentative mode in Anarchy, State, and Utopia , and in an explanatory mode in Philosophical Explanations , his mode in… …

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  • 151List of Yu-Gi-Oh! cards — The following is a list of notable cards that are in the Yu Gi Oh! Trading Card Game. The cards listed are notable for their relevance to the anime and manga of the same name, its three spin off series, Yu Gi Oh! GX, Yu Gi Oh! 5D s, and Yu Gi Oh! …

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  • 152china — /chuy neuh/, n. 1. a translucent ceramic material, biscuit fired at a high temperature, its glaze fired at a low temperature. 2. any porcelain ware. 3. plates, cups, saucers, etc., collectively. 4. figurines made of porcelain or ceramic material …

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  • 153China — /chuy neuh/, n. 1. People s Republic of, a country in E Asia. 1,221,591,778; 3,691,502 sq. mi. (9,560,990 sq. km). Cap.: Beijing. 2. Republic of. Also called Nationalist China. a republic consisting mainly of the island of Taiwan off the SE coast …

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  • 154international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …

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  • 155Lens — The transparent structure inside the eye that focuses light rays onto the retina (the nerve layer that lines the back of the eye, senses light and creates impulses that go through the optic nerve to the brain). The lens was named after the lentil …

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  • 156Nova (laser) — View down Nova s laser bay between two banks of beamlines. The blue boxes contain the amplifiers and their flashtube pumps , the tubes between the banks of amplifiers are the spatial filters. Nova was a high power laser built at the Lawrence… …

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  • 157Myopia — For other uses, see Myopia (disambiguation). Myopia Classification and external resources ICD 10 H …

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  • 158Trinitron — A 1985 27 Trinitron Trinitron is Sony s brand name for its line of aperture grille based CRTs used in television sets and computer display monitors. One of the first truly new television systems to enter the market since the 1950s, the Trinitron… …

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  • 159Contax — II A historic camera: the East Germany Contax S of 1949 – …

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  • 160Brave series — The nihongo|Brave series|勇者シリーズ|Yūsha shirīzu is a toy and animation franchise that began after toy company Takara had ended the animated Generation One storyline of Transformers in Japan. Following a decline in the series popularity that led to… …

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