obscuration definition

obscuration means the ratio of visible light attenuated by air pollutants suspended in the effluent streams to incident visible light, expressed as a percentage;
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obscuration means the difference, caused by matter in solution, between the actual strength of spirits and the apparent strength as indicated by the hydrometer;
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obscuration means the difference, caused by matter in solution, between the true strength of spirit and that indicated by the hydrometer;
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More Definitions of obscuration

obscuration means the difference between the true strength of any spirits or compounds, as ascertained in accordance with
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obscuration means the difference caused by matter in solution, between the true strength of spirit and that indicated bythe hydrom- eter;
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Related to obscuration

  • Configuration means State-specific changes made to the Software without Source Code or structural data model changes occurring.

  • Urgent works means any urgent measures, which in the opinion of the Engineer-in-charge become necessary during the progress of the work to obviate any risk of accident or failure or which become necessary for security.

  • Structures means an elevated road or a flyover, as the case may be;

  • Vulnerability means a weakness of an asset or mitigation that can be exploited by one or more threats.

  • Marking means a symbol or group of symbols displayed on the surface of the movement area in order to convey aeronautical information;