principal parallel
On an oblique photograph, a line parallel to the true horizon and passing through the principal point.

Military dictionary. 2000.

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  • principal parallel — pagrindinė lygiagretė statusas T sritis Gynyba apibrėžtis Fotogrametrijoje – linija įžambiojoje nuotraukoje, einanti per pagrindinį nuotraukos tašką ir lygiagreti horizonto linijai. atitikmenys: angl. principal parallel pranc. horizontale… …   NATO terminų aiškinamasis žodynas

  • principal parallel — i. On an oblique photograph, a line parallel to the true horizon and passing through the principal point. See photograph parallel. ii. On a vertical photograph, a parallel passing through a photo nadir. Also known as a photo nadir parallel …   Aviation dictionary

  • principal component analysis — ( PCA) A mathematical tool used to reduce the number of variables while retaining the original variability of the data The first principal component accounts for as much of the variability in the data as possible, and each succeeding component… …   Financial and business terms

  • Principal directions — are directions in the pitch plane, and correspond to the principal cross sections of a tooth.The axial direction is a direction parallel to an axis.The transverse direction is a direction within a transverse plane.The normal direction is a… …   Wikipedia

  • Parallel transport — In geometry, parallel transport is a way of transporting geometrical data along smooth curves in a manifold. If the manifold is equipped with an affine connection (a covariant derivative or connection on the tangent bundle), then this connection… …   Wikipedia

  • Principal (commercial law) — In commercial law, a principal is a person ndash;legal or natural ndash;who authorizes an agent to act to create one or more legal relationships with a third party. This branch of law is called agency and relies on the common law proposition qui… …   Wikipedia

  • Parallel computing — Programming paradigms Agent oriented Automata based Component based Flow based Pipelined Concatenative Concurrent computing …   Wikipedia

  • Principal focus — Focus Fo cus (f[=o] k[u^]s), n.; pl. E. {Focuses} (f[=o] k[u^]s*[e^]z), L. {Foci} (f[=o] s[imac]). [L. focus hearth, fireplace; perh. akin to E. bake. Cf. {Curfew}, {Fuel}, {Fusil} the firearm.] 1. (Opt.) A point in which the rays of light meet,… …   The Collaborative International Dictionary of English

  • principal focus — noun : the focus for a beam of incident rays parallel to the axis * * * Optics. See focal point (def. 1). [1825 35] * * * principal focus (optics) The focus for rays parallel to the axis • • • Main Entry: ↑focus …   Useful english dictionary

  • principal plane — noun : any of the planes perpendicular to the axis and passing through the principal points of an optical system * * * Optics. a plane that is perpendicular to the axis of a lens, mirror, or other optical system and at which rays diverging from a …   Useful english dictionary

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