COMPUTATION OF VISUAL RANGE IN FOG AND LOW CLOUDS

Abstract

Visual ranges were computed for various values of extinction coefficient, for five sets of conditions appropriate to fog and low clouds. The computations involve basic theories of visual range as developed by Allard (1876) and Koschmieder (1924). The four values of the threshold of illumination, which Haig and Morton (1958) determined, were used in the Allard theory computations.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1961
Accession Number
AD0274397

Entities

People

  • Don R. Dickson
  • J. Vern Hales

Tags

Communities of Interest

  • Air Platforms
  • Autonomy
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Force
  • Coefficients
  • Computations
  • Equations
  • Extinction
  • Government Procurement
  • Governments
  • Illumination
  • Light Sources
  • New York
  • Optical Phenomena
  • Refraction
  • Refractive Index
  • Scattering
  • Twilight
  • United States
  • Weather Forecasting

Readers

  • Military History of the United States in the 20th Century.
  • Spectroscopy.