Accession Number : AD0771216

Title :   A Simple Method for Measuring Absolute Diffuse Reflectance with a Laboratory Spectrophotometer.

Descriptive Note : Technical rept.,

Corporate Author : ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s) : Lindberg,James D.

Report Date : NOV 1973

Pagination or Media Count : 23

Abstract : BERG,James D. ;ECOM-5521DA-1-T-061102-B-53-A1-T-061102-B-53-A-19*Diffuse reflection, *Reflectance, Measurement, Spectrophotometers, Barium compounds, SulfatesBarium sulfatesA method is developed for measuring the absolute diffuse reflectance of the reference standard used in making relative diffuse reflectance measurements with an integrating sphere spectrophotometer. No extra experimental set up, such as a second integrating sphere, is required. The method is based on the Kubelka-Munk theory of diffuse reflectance. A graphical procedure is given, and an equation is derived which expresses the absolute reflectance as a function of four readily measurable quantities: two molar concentrations and two relative reflectances. (Modified author abstract)

Descriptors :   *Diffuse reflection, *Reflectance, Measurement, Spectrophotometers, Barium compounds, Sulfates

Subject Categories : Test Facilities, Equipment and Methods
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE