background
81background music — background ,music noun uncount 1. ) quiet music that plays in a public place 2. ) the music used in a movie to create a particular mood …
82background noise — background ,noise noun count or uncount noise that can be heard in addition to the main thing you are listening to …
83background radiation — n. 1. Astron. low intensity, multidimensional microwave radiation present in space: its existence is used to support the validity of the big bang theory since it is thought to be a remnant of the original explosion 2. Physics low levels of… …
84background heating — noun Heating which provides a low level of warmth but requires supplementing for complete comfort • • • Main Entry: ↑back …
85background tasks — plural noun (computing) Tasks such as printing which a computer can carry out simultaneously with tasks involving user input • • • Main Entry: ↑back …
86Background 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.… …
87Background 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 …
88Background 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… …
89Background 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… …
90Background (astronomy) — In astronomy, background commonly refers to the incoming light from an apparently empty part of the night sky. Even if no visible astronomical objects are present in given part of the sky, there always is some low luminosity present, due mostly… …
