CATALOGUE OF PARAMETERS OF POLARIZED LIGHT REFLECTED BY TERRESTRIAL ROCKS
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 29, 1967
- Accession Number
- AD0668051
Entities
People
- E. K. Kokhan
Organizations
- National Air and Space Intelligence Center