THE INFLUENCE OF SMOKE LAYER DEPTH ON THE ATTENUATION OF LIGHT IN A SIMULATED SCATTERING ATMOSPHERE

Abstract

Measurements of the flux received by variously orientated surfaces from an omnidirectional light source in smoke layers of different depths are discussed. It is shown that the attenuation of the flux incident on a forward facing surface in a smoke layer of given vertical transmission is constant for a given source distance/smoke layer depth ratio. This does not apply in the presence of a reflecting ceiling which enhances the flux in all measurements, nor to surfaces facing in other directions. The data have been related to a limited series of field measurements to derive a scaling factor which might be used to predict the flux likely to be received under other conditions in the natural atmosphere.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1962
Accession Number
AD0332435

Entities

People

  • N. W. Wootten
  • W. R. Lane

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Atmospheres
  • Attenuation
  • Boundaries
  • Carbon Dioxide
  • Chemical Laboratories
  • Chemistry
  • Coefficients
  • Computer Programs
  • Equations
  • Government Procurement
  • Governments
  • Ground Level
  • Instrumentation
  • Light Sources
  • Measurement
  • Scattering
  • Visual Inspection

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Fluid Mechanics and Fluid Dynamics.