Accession Number:

AD0668051

Title:

CATALOGUE OF PARAMETERS OF POLARIZED LIGHT REFLECTED BY TERRESTRIAL ROCKS

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1967-06-29

Pagination or Media Count:

25.0

Abstract:

The author summarizes the history of studies on reflected polarized light from solid bodies. His objective in the present investigation is measurement in natural rock material of changes in degree of polarization of reflected light of various wavelengths depending on the phase angle. Curves were obtained for angular changes in the polarization plane and the results were compared with curves for the lunar surface. An effort was made to obtain specimens corresponding as nearly as possible to lunar types. Twelve specimens were studied obsidian, vesicular andesite, basalt, gneissic granite, biotite granite, quartz, prismatic quartz, ocherous limonite, two varieties of tuff, and scoria in the uncrushed state and in crushed form. Grain size of the rocks was selected on conclusions concerning probable microrelief on the moon. The studies were made in the Planetary Laboratory of Leningrad State University, using the polarimeter of the Pulkovo Observatory. This polarimeter was attached to the indicating device indicatometer of the University. The model for the experiment was set up with a lamp to represent the sun, the specimen to represent the moon, and the polarimeter to represent the earth. All specimens were investigated with yellow and green Schott filters and without any filter. Measurements were made at various incident angles at two angles of reflection 0 and 45 degrees. The results are tabulated. Author

Subject Categories:

  • Astrophysics
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE