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Image - 3 reference results

An image (from Latin imago) or picture is an artifact, usually two-dimensional, that has a similar appearance to some subject—usually a physical object or a person.

Images may be two-dimensional, such as a photograph, screen display, and as well as a three-dimensional, such as a statue. They may be captured by optical devices—such as cameras, mirrors, lenses, telescopes, microscopes, etc. and natural objects and phenomena, such as the human eye or water surfaces.

The word image is also used in the broader sense of any two-dimensional figure such as a map, a graph, a pie chart, or an abstract painting. In this wider sense, images can also be rendered manually, such as by drawing, painting, carving, rendered automatically by printing or computer graphics technology, or developed by a combination of methods, especially in a pseudo-photograph.

A volatile image is one that exists only for a short period of time. This may be a reflection of an object by a mirror, a projection of a camera obscura, or a scene displayed on a cathode ray tube. A fixed image, also called a hardcopy, is one that has been recorded on a material object, such as paper or textile.

A mental image exists in an individual's mind: something one remembers or imagines. The subject of an image need not be real; it may be an abstract concept, such as a graph, function, or "imaginary" entity. For example, Sigmund Freud claimed to have dreamt purely in aural-images of dialogues. The development of synthetic acoustic technologies and the creation of sound art have led to a consideration of the possibilities of a sound-image made up of irreducible phonic substance beyond linguistic or musicological analysis.

Still image

A still image is a single static image, as distinguished from a moving image (see below). This phrase is used in photography, visual media and the computer industry to emphasize that one is not talking about movies, or in very precise or pedantic technical writing such as a standard.

A film still is a photograph taken on the set of a movie or television program during production, used for promotional purposes.

Moving image

A moving image is typically a movie (film), or video, including digital video. It could also be an animated display such as a zoetrope.

External links

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Last updated on Saturday October 11, 2008 at 09:43:21 PDT (GMT -0700)
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IMAGE

IMAGE (from Imager for Magnetopause-to-Aurora Global Exploration), or Explorer 78, was a NASA MIDEX mission that studied the global response of the Earth's magnetosphere to changes in the solar wind. It was launched March 25, 2000 by a Delta II rocket from Vandenberg AFB and ceased operations in December 2005.

The IMAGE craft was placed in a 1,000×46,000 km orbit around the Earth, with an inclination of 90° (passing over the poles) and a 14.2 hour period. IMAGE was the first spacecraft dedicated to observing the magnetosphere of the Earth, and it produced comprehensive global images of plasma in the inner magnetosphere. It did this using five instruments:

Neutral Atom Imagers (LENA, MENA, HENA)
Far-Ultraviolet (FUV) Imaging System
Extreme Ultraviolet (EUV) Imager
Radio Plasma Imager (RPI)
Central Instrument Data Processor (CIDP)

The CIDP as well as the Command & Data Handling Subsystem (main on-board computer) of the craft were built around the mission-proven RAD6000 avionics processors.