brightness threshold

См. также в других словарях:

• threshold — 1. The point at which a stimulus first produces a sensation. 2. The lower limit of perception of a stimulus. 3. The minimal stimulus that produces excitation of any structure; e.g., the minimal stimulus eliciting a moto …   Medical dictionary

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• achromatic threshold — the least intensity of the spectrum that produces a sensation of color; reduction of intensity below this point produces a sensation of brightness only, without any color distinction …   Medical dictionary

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• intensity level — noun the amount of energy transmitted (as by acoustic or electromagnetic radiation) he adjusted the intensity of the sound they measured the station s signal strength • Syn: ↑intensity, ↑strength • Hypernyms: ↑magnitude …   Useful english dictionary

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• Malmquist bias — For other uses of Malmquist, see Malmquist (disambiguation). The Malmquist bias refers to an effect in observational astronomy which leads to the preferential detection of intrinsically bright objects. It was first popularized in 1922 by Swedish… …   Wikipedia

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