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background exposure

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  • 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

  • Exposure (magic) — Exposure in magic refers to the practice of making magical methods (the secrets of how magic tricks are performed) available to those who are not magicians. It is generally frowned upon as a type of spoiler that ruins the experience of magical… …   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

  • Exposure (photography) — Underexposure redirects here. For the 2005 film by Oday Rasheed, see Underexposure (2005 film). A long exposure showing stars rotating around the southern and northern celestial poles. Credit: European Southern Observatory …   Wikipedia

  • Background (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… …   Wikipedia

  • Exposure (Robert Fripp album) — Infobox Album Name = Exposure Type = studio Artist = Robert Fripp Released = start date|1979|6 Recorded = start date|1977|1–end date|1979|1 Genre = Rock, progressive rock, ambient music, hard rock Length = 45:28 Label = E.G. Producer = Robert… …   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

  • Exposure sheet — An exposure sheet (also referred to as camera instruction sheet, dope sheet or X sheet) is a traditional animation tool that allows an animator to organize his thinking and give instructions to the cameraman on how the animation is to be shot. It …   Wikipedia

  • background density — in radiography, the density of a processed film due to factors other than the radiation exposure received through the recorded objects or structures, e.g., inherent (film) density, scatter radiation, or fogging …   Medical dictionary

  • Multiple exposure — Double exposure redirects here. For other uses, see Double exposure (disambiguation). Alternative photography Bleach bypass · Cross processing · Fisheye  …   Wikipedia

  • Recommended Exposure Limits*, Table — ▪ Table type of exposure maximum permissible dose Occupational exposures (annual)** Effective dose equivalent limit (stochastic effects) 50 mSv Dose equivalent limits for tissues and organs (non stochastic effects) Lens of eye 150 mSv All others… …   Universalium

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