Image

An image (from Latin: imago) is an artifact that depicts visual perception, for example a two-dimensional picture, that has a similar appearance to some subject—usually a physical object or a person, thus providing a depiction of it.

Characteristics

Images may be two-dimensional, such as a photograph, screen display, and as well as a three-dimensional, such as a statue or hologram. 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.

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 a painting. In this wider sense, images can also be rendered manually, such as by drawing, the art of 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 hard copy, is one that has been recorded on a material object, such as paper or textile by photography or any other digital process.

Image (Angel novel)

Image is an original novel based on the U.S. television series Angel.

Plot summary

Cordelia Chase has a vision of a child being attacked by a squidlike demon. Meanwhile, Gunn is trying to rescue a young artist; the artist's studio is being attacked by vampires. Cordelia goes to investigate the mansion from her vision. She soon finds herself surrounded by baby products, portraits, and chased by a tentacled monster.

When Angel arrives on the scene, he is surprised to discover that he recognizes some of the portraits. He holds distant memories of him and Darla spending a night with storytellers and artists. Angel reveals that he and Darla were present at the party where Mary Shelley was inspired to write Frankenstein; indeed, they witnessed the event that gave Mary the initial idea.

An old evil is trying to use a painting to preserve the life of its body, which, in the terms of the story, inspired the novel The Picture of Dorian Gray. In their efforts to save a child the villain is focused on, Team Angel will learn not to judge everything by its image.

Image (category theory)

Given a category C and a morphism in C, the image of f is a monomorphism satisfying the following universal property:

There exists a morphism such that .

For any object Z with a morphism and a monomorphism such that , there exists a unique morphism such that .

Remarks:

The image of f is often denoted by im f or Im(f).

One can show that a morphism f is epic if and only if f = im f.

Examples

In the category of sets the image of a morphism is the inclusion from the ordinary image to . In many concrete categories such as groups, abelian groups and (left- or right) modules, the image of a morphism is the image of the correspondent morphism in the category of sets.

In any normal category with a zero object and kernels and cokernels for every morphism, the image of a morphism can be expressed as follows:

Hydro

Hydro may refer to:

Energy technologies

Utilities

Australia:

Canada:

Europe:

Other uses

Places:

Personal names:

Hydro (fuel-station chain)

Hydro was a chain of fuel stations throughout Sweden owned by Statoil. The chain had more than 500 stations, as well as some unmanned Uno-X stations. The company also operated in retailing natural gas, electricity and heating oil.

History

The Hydro chain was created in the late 1980s when Norsk Hydro bought the Mobil stations in Norway, Sweden and Denmark to transform itself to a vertically integrated petroleum company. The stations were rebranded Hydro in all three countries. In 1995 the Norwegian and Danish stations were converted to Hydro Texaco when Hydro merged its stations in the two countries with Texaco's stations. In 2007 the ownership of Hydro was transferred to StatoilHydro when Norsk Hydro's oil and gas division merged with Statoil. When StatoilHydro was renamed Statoil in November 2009, the use of the Hydro-brand was discontinued and ownership of the Hydro filling stations was transferred to St1.

References

External links

List of Marvel Comics characters: H

Haazareth Three

The Haazareth Three debuted in Fantastic Four Vol 3 #69 (2003). They operate out of the hellish realm ruled by Mephisto. They are a trio of demons with whom Doctor Doom made a pact (seen in the Unthinkable story arc). They made a deal with Doom; if he sacrifices something of irreplaceable value, they would provide him with the magical powers he would have possessed if he had chosen to devote his life to studying magic over science. Doom does, killing his childhood sweetheart, Valeria. The demons come through with the deal.

Hack

Hack is a mutant whose first appearance was in Excalibur vol. 2 #2. He was one of the few survivors after Cassandra Nova programmed her Wild Sentinels to decimate the island nation of Genosha, killing over 16 million mutants. He found other survivors and allied himself with Unus the Untouchable and his gang. He was a very valuable asset on the island since all forms of electronic communication were eradicated or made useless by the resulting electro-magnetic damage. Inside of the gang, he became close friends with Hub and the two of them began to doubt if Unus' exclusive, clique-like strategy was the best way. Hack was gifted with a finely tuned form of telepathy that allowed him to "hack" into almost any mind.