focal line

focal line
фокальная линия

Англо-русский технический словарь.

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  • focal line anterior — a line whose direction is perpendicular to the meridian of greatest curvature of a refracting surface …   Medical dictionary

  • focal line posterior — a line whose direction is perpendicular to the meridian of least curvature of a refracting surface …   Medical dictionary

  • FOCAL-69 — was the landmark version of the FOCAL programming language, more widely publicized than the original version of the language created in 1968. FOCAL 69, created by Richard Merrill is important because: * It was the basis for all later derivatives… …   Wikipedia

  • FOCAL (programming language) — FOCAL, (abbreviation of FOrmula CALculator), is an interpreted programming language resembling JOSS.Largely the creation of Richard Merrill, FOCAL was initially written for and had its largest impact on the Digital Equipment Corporation s (DEC s) …   Wikipedia

  • Focal dystonia — is a neurological condition affecting a muscle or muscles in a part of the body causing an undesirable muscular contraction or twisting. For example, in focal hand dystonia, the fingers either curl into the palm or extend outward without control …   Wikipedia

  • Line level — is a term used to denote the strength of an audio signal used to transmit analog sound information between audio components such as CD and DVD players, TVs, audio amplifiers, and mixing consoles, and sometimes MP3 players. In contrast to line… …   Wikipedia

  • Focal surface — For a surface in three dimension the focal surface, surface of centers or evolute is formed by taking the centers of the curvature spheres, which are the tangential spheres whose radii are the reciprocals of one of the principal curvatures at the …   Wikipedia

  • Focal point — A focal point may mean: * Focus (optics), the point at which initially collimated rays of light meet after passing through a convex lens, or reflecting off of a concave mirror. * In mathematics: ** Focus (geometry), a special point used in… …   Wikipedia

  • Line of succession to the Russian throne — The Monarchy of Russia was abolished in 1917 following the February Revolution, which forced Tsar Nicholas II to abdicate. The current Pretender is open to debate.Line of succession in March 1917The numbers following the names indicate descent… …   Wikipedia

  • focal plane —    In photography, an image line at right angle to the optical axis passing through the focal point. This forms the plane of sharp focus when a camera is set on infinity. Also see aperture, camera, focal length, and f/stop …   Glossary of Art Terms

  • Affine focal set — In mathematics, and especially affine differential geometry, the affine focal set of a smooth submanifold M embedded in a smooth manifold N is the caustic generated by the affine normal lines. It can be realised as the bifurcation set of a… …   Wikipedia

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