background

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background

1. Art
a. the plane or ground in a picture upon which all other planes or forms appear superimposed
b. the parts of a picture that appear most distant
2. Physics low-intensity radiation as, for example, from small amounts of radioisotopes in soil, air, building materials, etc.
3. Electronics
a. unwanted effects, such as noise, occurring in a measuring instrument, electronic device, etc.
b. (as modifier): background interference

background

[′bak‚grau̇nd]
(communications)
Picture white of the facsimile copy being scanned when the picture is black and white only.
Undesired printing in the recorded facsimile copy of the picture being transmitted, resulting in shading of the background area.
Noise heard during radio reception caused by atmospheric interference or the operation of the receiver at such high gain that inherent tube and circuit noises become noticeable.

background

(operating system)
A task running in the background (a background task) is detached from the terminal where it was started (and often running at a lower priority); opposite of foreground. This means that the task's input and output must be from/to files (or other processes).

Nowadays this term is primarily associated with Unix, but it appears to have been first used in this sense on OS/360.

Compare amp off, batch, slopsucker.

background

(jargon)
For a human to do a task "in the background" is to do it whenever foreground matters are not claiming your undivided attention, and "to background" something means to relegate it to a lower priority. "For now, we'll just print a list of nodes and links; I'm working on the graph-printing problem in the background." Note that this implies ongoing activity but at a reduced level or in spare time, in contrast to mainstream "back burner" (which connotes benign neglect until some future resumption of activity). Some people prefer to use the term for processing that they have queued up for their unconscious minds (often a fruitful tack to take upon encountering an obstacle in creative work).

background

(1) The non-interactive processing in the computer. See foreground/background.

(2) The base, or backdrop color. In order to distinguish any image on screen, whether text or graphics, there must be a contrasting background color.
References in periodicals archive ?
To allow people with those types of backgrounds to be caring for these types of kids is, if it's not negligent, at the very least, is highly suspect.
Dating: Sixty-six percent indicated they would date someone from a background different from their own however less than half (46 percent) thought their parents would be accepting of their dating someone from a racial/ethnic or religious group different from their own.
Supervisor Gloria Molina won board support to direct Janssen, the Department of Human Resources and county counsel to include - in a corrective action plan to prevent similar problems in the future - more frequent background checks for sensitive employees, specifically those with direct access to children, throughout county government.
For low concentrations, some of the advantage conferred by the gain in intensity is therefore counteracted by the decrease in peak to background ratio.
Reacting in part to the Rio Linda slaying, Los Angeles schools Superintendent Sid Thompson ordered Tuesday that new teachers and noncredentialed workers be barred from starting work until such fingerprint background checks are done.
On a whim, he and public access coordinator Roger Martin decided to videotape the fish as a background scene for Community Calendar, which lists activities of local nonprofit groups.
The researchers concluded that the cuttlefish rely on color intensity rather than actual color to blend into their backgrounds.
At last week's IMN High-Net-Worth Alternative Investing Symposium, Panelist Ronny Wasser reiterated the need for background due diligence investigations into alternative fund managers.
They now realize that in many cases they may really know very little about the background of the people who work for their company.
The partnerships enable BrassRing Systems to deliver background checking, candidate assessment and compensation analysis capabilities to users directly from the Enterprise desktop.
com), enables customers to choose background images called "environments," such as exotic beaches or European city streets, and then match the lighting and camera angle characteristics of the "environment" when shooting their models or products in the photography studio.