background


background
   Apparent absorption caused by anything other than the substance for which the analysis is being made.

Forensic science glossary. . 2012.

Look at other dictionaries:

  • background — ack ground , n. [Back, a. + ground.] [1913 Webster] 1. Ground in the rear or behind, or in the distance, as opposed to the {foreground}, or the ground in front. [1913 Webster] 2. (Paint.) The space which is behind and subordinate to a portrait… …   The Collaborative International Dictionary of English

  • Background — The term background may refer to:In art: *Background (art), the part of a scene that appears to be farthest from the viewer *Background lighting, a film techniqueIn computing: *Background (computer software), software that is running but not… …   Wikipedia

  • background — I. noun Usage: often attributive Date: 1672 1. a. the scenery or ground behind something b. the part of a painting representing what lies behind objects in the foreground 2. an inconspicuous position 3. a. the conditions that form the setting… …   New Collegiate Dictionary

  • Background independence — is a condition in theoretical physics, especially in quantum gravity (QG), that requires the defining equations of a theory to be independent of the actual shape of the spacetime and the value of various fields within the spacetime, and in… …   Wikipedia

  • Background Intelligent Transfer Service — (BITS) is a component of modern Microsoft Windows operating systems that facilitates prioritized, throttled, and asynchronous transfer of files between machines using idle network bandwidth. It is most commonly used by recent versions of Windows… …   Wikipedia

  • Background count — Background count, in radioactivity measurements, is the base level radiation count which is subtracted from the measurement being taken.Various sources may contribute to the background count: cosmic rays, natural radioactivity in the environment… …   Wikipedia

  • Background Radiation Equivalent Time — Background Radiation Equivalent Time, or BRET, is a unit of measurement of radiation dosage. One BRET is the equivalent of one day worth of exposure to background radiation.BRET values range from 2 BRET for a dental x ray to around 400 for a… …   Wikipedia

  • Background radiation — This article is about ionizing radiation. For microwave background radiation from space, see Cosmic background radiation and cosmic background. Thermal radiation emitted by Earth is not considered in this category because it is not ionizing.… …   Wikipedia

  • Background check — A background check or background investigation is the process of looking up and compiling criminal records, commercial records and financial records (in certain instances such as employment screening) of an individual. Background checks are often …   Wikipedia

  • Background light — The background light is used to illuminate the background area of a set. The background light will also provide separation between the subject and the background. In the standard 4 point lighting setup, the background light is placed last and is… …   Wikipedia

  • Background noise — In acoustics and specifically in acoustical engineering, background noise is any sound other than the sound being monitored. Background noise is a form of noise pollution or interference. Background noise is an important concept in setting noise… …   Wikipedia


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