DEVIATIONS FROM INTEGRATING SPHERE THEORY CAUSED BY CENTRALLY LOCATED SAMPLES

Abstract

A review of the assumptions made in the theory of the classical integrating sphere is given. The validity of these assumptions as applied to a modified integrating sphere is discussed in terms of a computer analysis and experimental data. The results of the analysis indicate that a possible error of 15 percent may be introduced into the absolute reflectance determinations. This can occur when the classical theory is applied to a modified integrating sphere using the angular-hemispherical technique. The parameters considered in the analysis are irradiance, sphere radius, sample reflectance, specular component of the sample, angle of incidence, and detector location.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1966
Accession Number
AD0630899

Entities

People

  • B. A. Mccullough
  • Bobby E. Wood
  • D. C. Todd
  • J. P. Dawson
  • R. C. Birkebak

Organizations

  • Arnold Engineering Development Complex

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Air Force
  • Angle Of Incidence
  • Classification
  • Computer Programs
  • Computers
  • Contractors
  • Contracts
  • Detectors
  • Experimental Data
  • Governments
  • Measurement
  • Radiation
  • Reflectance
  • Reflectors
  • Standards
  • Temperature Gradients

Fields of Study

  • Physics

Readers

  • Atmospheric Remote Sensing.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Fluid Dynamics.