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Projection can be any of:














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Projection can be any of:
  • The display of an image by devices such as:
    • Movie projector
      Movie projector

      A movie projector is an optics-mechanics device for displaying Film by projecting them on a movie screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras....
    • Video projector
      Video projector

      A video projector takes a video Signalling and projects the corresponding image on a projection screen using a lens system. All video projectors use a very bright light to project the image, and most modern ones can correct any curves, blurriness, and other inconsistencies through manual settings....
    • Overhead projector
      Overhead projector

      An overhead projector is a variant of slide projector that is used to display images to an audience....
    • Slide projector
      Slide projector

      A slide projector is an opto-mechanical device to view Photography Transparency . It has four main elements: a fan-cooled electric light bulb or other light source, a reflector and "condensing" lens to direct the light to the slide, a holder for the slide and a focusing lens ....
    • Camera obscura
      Camera obscura

      The camera obscura is an optical device used, for example, in drawing or for entertainment. It is one of the inventions leading to photography....


  • Map projection
    Map projection

    A map projection is any method of representing the surface of a sphere or other shape on a Plane . Map projections are necessary for creating maps....
    , reduces our three-dimensional planet to a flat map (Geography)
  • Graphical projection
    Graphical projection

    Graphical projection is a protocol by which an image of an imaginary Three-dimensional space object is projected onto a planar surface without the aid of mathematical calculation....
    , the production of a two-dimensional image of a higher-dimensional object
    • Orthographic projection
      Orthographic projection

      Orthographic projection is a means of representing a Three-dimensional space object in 2D.It is a form of parallel projection, where the view direction is orthogonal to the projection plane, resulting in every plane of the scene appearing in affine transformation on the viewing surface....
      , including:
      • Plan
        Plan view

        A plan is an orthographic projection of a 3-dimensional object from the position of a horizontal plane through the object. In other words, a plan is a Cross section viewed from the top....
        , or floor plan
        Floor plan

        A floor plan, or floorplan, in architecture and building engineering is a diagram, usually to Scale , of the relationships between rooms, spaces and other physical features at one level of a structure....
         view
      • Elevation
        Elevation (view)

        An elevation is an orthographic projection of a 3-dimensional object from the position of a horizontal plane beside an object. In other words, an elevation is a side-view as viewed from the front, back, left or right....
        , usually a 'head-on' view of an exterior
      • Section
        Cross section (geometry)

        In geometry, a cross-section is the intersection of a body in 2-dimensional space with a line, or of a body in 3-dimensional space with a plane, etc....
        , a cutaway view of the interior
      • Axonometric projection
        Axonometric projection

        Axonometric projection is type of graphical projection technique, used to create a pictural drawing of an object by rotating the object on an axis relative to a projection, or picture plane....
        , including:
        • Isometric projection
          Isometric projection

          File:Isometric projection.jpgIsometric projection is a form of graphical projection, more specifically, a form of axonometric projection. It is a method of visually representing three-dimensional objects in two dimensions, in which the three Cartesian coordinate system appear equally foreshortened and the angles between any two of them are 1...
        • Dimetric projection
          Dimetric projection

          Dimetric projection is a form of axonometric projection, in which its direction of viewing is such that two of the three axes of space appear equally foreshortened, of which the attendant scale and angles of presentation are determined according to the angle of viewing; the scale of the third direction is determined separately....
        • Trimetric projection
          Trimetric projection

          Trimetric projection is a form of axonometric projection, where the direction of viewing is such that all of the three axes of space appear unequally foreshortened....
    • Oblique projection
      Oblique projection

      Oblique projection is a simple type of graphical projection used for producing pictorial, two-dimensional of three-dimensional objects....
      ,
      • Cavalier projection
      • Cabinet projection
        Cabinet projection

        Cabinet projection or sometimes cabinet perspective is a type of oblique projection. The term stems from the use for illustrations in furniture industry....
         and
    • Perspective projection


  • In chemistry, any one of:
    • Fischer projection
      Fischer projection

      The Fischer projection, devised by Hermann Emil Fischer in 1891, is a two-dimensional representation of a Three-dimensional space organic molecule by projection....
    • Haworth projection
      Haworth projection

      A Haworth projection is a common way of representing the cyclic Structural formula of monosaccharides with a simple three-dimensional perspective....
    • Newman projection
      Newman projection

      A Newman projection, useful in alkane stereochemistry, visualizes chemical conformations of a carbon-carbon chemical bond from front to back, with the front carbon represented by a dot and the back carbon as a circle ....


  • Projection (mathematics)
    Projection (mathematics)

    In mathematics, a projection is any one of several different types of functions, mappings, operations, or transformations, for example, the following:...
    , any of several different types of functions, mappings, operations, or transformations
    • 3D projection
      3D projection

      3D projection is any method of mapping three-dimensional points to a two-dimensional plane. As most current methods for displaying graphical data are based on planar two-dimensional media, the use of this type of projection is widespread, especially in computer graphics, engineering and drafting....
    • Projection (relational algebra)
      Projection (relational algebra)

      In relational algebra, a projection is a unary operation written as where is a set of attribute names. The result of such projection is defined as the Set obtained when the components of the tuple are restricted to the set ? it discards the other attributes....
    • Projection (linear algebra)
      Projection (linear algebra)

      In linear algebra and functional analysis, a projection is a linear transformation P from a vector space to itself such that P2 = P....
    • Vector projection
      Vector resolute

      The vector resolute of two vectors, in the direction of , is given by:where is the angle between the vectors and and is the unit vector in the direction of ....
    • Projection method (fluid dynamics)
      Projection method (fluid dynamics)

      The projection method is an effective means of Numerical analysis solving time-dependent incompressible flow problems. It was originally introduced by Alexandre Chorin and independently by Roger Temam as an efficient means of solving the incompressible Navier-Stokes equations....
    • Projective redirects here. Projective geometry
      Projective geometry

      In mathematics projective geometry is the study of geometric properties which are invariant under projective transformations. The field of projective geometry is itself divided into many subfields, two examples of which are projective algebraic geometry and projective differential geometry ....
       is a non-Euclidean geometry that involves projective spaces. In another direction, projective module
      Projective module

      In mathematics, particularly in abstract algebra and homological algebra, the concept of projective module over a ring R is a more flexible generalisation of the idea of a free module ....
      s and projective object
      Projective object

      In category theory, the notion of a projective object generalizes the notion of free module.An object P in a category C is projective if the hom functor...
      s generalize free modules
  • Projections (Voyager episode)
    Projections (Voyager episode)

    "Projections" is the 19th episode of Star Trek: Voyager, the third episode in the second season....
    , an episode of the television series Star Trek: Voyager
  • Power projection
    Power projection

    Power projection is a term used primarily in American military science and political science to refer to the capacity of a state to conduct expeditionary warfare, i.e....
    , the capacity of a state to implement policy by means of force, or the threat thereof, in an area distant from its own territory
  • Psychological projection
    Psychological projection

    In psychology, psychological projection is a defense mechanism where a person's personal attributes, unacceptable or unwanted thoughts, and/or emotions are ascribed onto another person or people....
    , or "Freudian projection", a defense mechanism in which one attributes to others, one’s own unacceptable or unwanted thoughts or emotions
  • a forecasting of future developments based on current statistics and trends