Difference between revisions of "Geographical Range"

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Superseded by new definition from Guideline G1065
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The greatest distance at which an object or a light source can be seen under conditions of perfect visibility, as limited only by the curvature of the earth, by refraction of the atmosphere, and by the elevation of the observer and the object or light.
  
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[[Image:Ch2_Fig9.jpg|400px|border]]
  
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The maximum distance at which light from a light or other aid to navigation can reach an observer, as limited only by the curvature of the earth and refraction in the atmosphere and by the heights of the observer and of the light or aid.
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{{languages|Codes on Alerts and Indicators}}
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[[Category:2.1 Optics and Vision]]
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[[Category:Alphabetical Index]]
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[[Category:IALA Dictionary 2018 Revision]]
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[[Category:Approved by Council through approval of source document]]
  
[[Image:Ch2_Fig9.jpg|400px|border]]
 
  
{{IALAFooter}}
 
  
{{languages|Geographical Range}}
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Source: ENG7, Guideline G1065 (2017)
[[Category:Historic Terms]]
 
[[Category:Alphabetical Index]]
 
[[Category:IALA Dictionary 1970-89 Edition]]
 

Latest revision as of 16:41, 18 February 2018

The greatest distance at which an object or a light source can be seen under conditions of perfect visibility, as limited only by the curvature of the earth, by refraction of the atmosphere, and by the elevation of the observer and the object or light.

Ch2 Fig9.jpg



Source: ENG7, Guideline G1065 (2017)