Projection
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Projection, projector, or projective may refer to:
- The display of an image by devices such as:
- Movie projector A movie projector is an opto-mechanical device for displaying moving pictures by projecting them on a projection screen. Most of the optical and mechanical elements, except for the illumination and sound devices, are present in movie cameras
- Video projector A video projector takes a video signal 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. Video projectors are widely used for conference room
- Overhead projector An overhead projector typically consists of a large box containing a very bright lamp and a fan to cool it. On top of the box is a large fresnel lens that collimates the light. Above the box, typically on a long arm, is a mirror and lens that focusses and redirects the light forward instead of up
- Slide projector A slide projector is an opto-mechanical device to view photographic slides. It has four main elements: a fan-cooled electric incandescent 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. A flat piece of heat absorbing glass is often placed in
- Camera obscura The camera obscura is an optical device that projects an image of its surroundings on a screen. It is used in drawing and for entertainment, and was one of the inventions that led to photography. The device consists of a box or room with a hole in one side. Light from an external scene passes through the hole and strikes a surface inside where it
- 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. All map projections distort the surface in some fashion. Depending on the purpose of the map, some distortions are acceptable and others are not; therefore different map projections exist in order to, reduces a three-dimensional planet to a flat map (geography)
- Graphical projection Graphical projection is a protocol by which an image of an three-dimensional object is projected onto a planar surface without the aid of mathematical calculation, used in technical drawing, the production of a two-dimensional image of a three-dimensional object
- Parallel projection In linear algebra and functional analysis, a projection is a linear transformation P from a vector space to itself such that P2 = P. It leaves its image unchanged. Though abstract, this definition of "projection" formalizes and generalizes the idea of graphical projection. One can also consider the effect of a projection on a geometrical
- Orthographic projection Orthographic projection is a means of representing a three-dimensional object in two dimensions. 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. It is further divided into multiview orthographic, including:
- Plan 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 section viewed from the top. In such views, the portion of the object in above the plane is omitted to reveal what lies beyond. In the case of a floor plan, the roof and upper portion of the walls, or floor plan A floor plan, or floorplan, in architecture and building engineering is a diagram, usually to scale, showing the relationships between rooms, spaces and other physical features at one level of a structure view
- Elevation 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 side view of an exterior
- Section In geometry, a cross-section is the intersection of a figure in 2-dimensional space with a line, or of a body in 3-dimensional space with a plane, etc. More plainly, when cutting an object into slices one gets many parallel cross-sections, a view of the interior at a particular cutting plane
- Axonometric projection Axonometric projection is a type of parallel projection, more specifically a type of orthographic projection, used to create a pictorial drawing of an object, where the object is rotated along one or more of its axes relative to the plane of projection, including:
- Isometric projection Isometric 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 coordinate axes appear equally foreshortened and the angles between any two of them are 120 degrees
- Dimetric projection Axonometric projection is a type of parallel projection used to create a pictorial drawing of an object, where the object is rotated along one or more of its axes relative to the plane of projection. Axonometric projection is a type of orthographic projection where the plane or axis of the object depicted is not parallel to the projection plane
- Trimetric projection Axonometric projection is a type of parallel projection, more specifically a type of orthographic projection, used to create a pictorial drawing of an object, where the object is rotated along one or more of its axes relative to the plane of projection
- Oblique projection Oblique projection is a simple type of graphical projection used for producing pictorial, two-dimensional images of three-dimensional objects, including:
- Orthographic projection Orthographic projection is a means of representing a three-dimensional object in two dimensions. 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. It is further divided into multiview orthographic, including:
- Perspective 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
- Parallel projection In linear algebra and functional analysis, a projection is a linear transformation P from a vector space to itself such that P2 = P. It leaves its image unchanged. Though abstract, this definition of "projection" formalizes and generalizes the idea of graphical projection. One can also consider the effect of a projection on a geometrical
Chemistry
- Fischer projection The Fischer projection, devised by Hermann Emil Fischer in 1891, is a two-dimensional representation of a three-dimensional organic molecule by projection. They are used by chemists, particularly in organic chemistry and biochemistry. All bonds are depicted as horizontal or vertical lines. The carbon chain is depicted vertically, with carbon atoms
- Haworth projection A Haworth projection is a common way of representing the cyclic structure of monosaccharides with a simple three-dimensional perspective
- 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 . The front carbon atom is called proximal, while the back atom is called distal. This type of representation is useful for
Mathematics
- Projection (mathematics), any of several different types of functions, mappings, operations, or transformations
- 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) In relational algebra, a projection is a unary operation written as where a1,...,an is a set of attribute names. The result of such projection is defined as the set obtained when the components of the tuple R are restricted to the set {a1,...,an} – it discards the other attributes
- 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. It leaves its image unchanged. Though abstract, this definition of "projection" formalizes and generalizes the idea of graphical projection. One can also consider the effect of a projection on a geometrical
- Vector projection
- Projection method (fluid dynamics)
- Projection (set theory)
- Projective geometry In mathematics, projective geometry is the study of geometric properties that are invariant under projective transformations. This means that, compared to elementary geometry, projective geometry has a different setting, projective space, and a selective set of basic geometric concepts. The basic intuitions are that projective space has more is a non-Euclidean geometry that involves projective spaces. In another direction, projective modules 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 . Various equivalent characterizations of these modules are available and projective objects generalize free modules
Other
- Military power projection Power projection is a term used in military and political science to refer to the capacity of a state to conduct expeditionary warfare, i.e. to intimidate other nations and implement policy by means of force, or the threat thereof, in an area distant from its own territory. This ability is a crucial element of a state's power in international, 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 or projection bias is the unconscious act of denial of a person's own attributes, thoughts, and emotions, which are then ascribed to the outside world, such as to the weather, the government, a tool, or to other people. Thus, it involves imagining or projecting that others have those feelings, or "Freudian projection," a defense mechanism in which one attributes to others one’s own unacceptable or unwanted thoughts or emotions
- Projection fibers, in neuroscience, white matter fibers that connect the cortex to the lower parts of the brain or the spinal cord.
- "Projections" (Voyager episode), an episode of the television series Star Trek: Voyager
- A forecasting Forecasting is the process of making statements about events whose actual outcomes have not yet been observed. A commonplace example might be estimation of the expected value for some variable of interest at some specified future date. Prediction is a similar, but more general term. Both might refer to formal statistical methods employing time of future developments based on current statistics and trends
See also
- All pages beginning with "Projection"
- All pages with titles containing "Projection"
- Project (disambiguation)
- Projection effect (disambiguation)
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weblogs.newsday.com
Newsday, NY
Statistical analysts whiff on their share of projections , as well. Remember, a primary lightning rod in "Moneyball" was Jeremy Brown, whom the scouts hated and the statistical analysts loved, and who never panned out after the A's selected him in the ...
eaas.co.uk
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rod o http www eaas co uk astro photos Sun sun projection normal gif Metoda ta mo e nagrza sprz t optyczny co w skrajnym przypadku mo e uszkodzi optyk teleskopu lub okularu Dlatego
politico.com
Darren Samuelsohn
ue, 15 Jun 2010 21:14:26 GM
He and Kerry cite an EPA study as proof that their global warming bill would cost Americans little.
How do i get clearer font on a computer using a big screen projection tv?
Q. I have my computer with a N-VIDIA Geforce 7800 GTX running to the component ports on my mistubishi big screen projection tv. Anything I can do to get clearer font? I tried running the sharpness on the tv, but no luck.
Asked by Mark P - Fri May 25 01:29:19 2007 - - 2 Answers - 0 Comments
A. If it's an LCD or DLP TV, you should set the resolution on your computer to the native resolution of the TV.
Answered by Derek H - Fri May 25 01:38:18 2007
Q. I have my computer with a N-VIDIA Geforce 7800 GTX running to the component ports on my mistubishi big screen projection tv. Anything I can do to get clearer font? I tried running the sharpness on the tv, but no luck.
Asked by Mark P - Fri May 25 01:29:19 2007 - - 2 Answers - 0 Comments
A. If it's an LCD or DLP TV, you should set the resolution on your computer to the native resolution of the TV.
Answered by Derek H - Fri May 25 01:38:18 2007
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