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The word projection can mean more than one thing.
- In cartography, a map projection
- In psychology, psychological projection
- 3D projection, orthographic projection and isometric projection are ways of representing 3D scenes in 2D; see graphical projection.
- In mathematics a projection is a linear transformation which remains unchanged if applied twice (p(u) =
p(p(u))) (in other words, it is idempotent), such as
that taking (x, y, z) in three dimensions to (x, y, 0) in the plane or
generalisations of this in other dimensions. See orthogonal
projection, projection (linear
algebra), projection operator.
- In cinematography, projection is the display of a movie in a theater using a film projector, which is likely to be replaced by digital projection
This is a disambiguation page; that is, one
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