Accession Number : AD0264169

Title :   PHOTOMETRICAL RELIEF OF THE LUNAR SURFACE

Corporate Author : TRW SPACE TECHNOLOGY LABS LOS ANGELES CALIF

Personal Author(s) : ORLOVA,N.S.

Report Date : MAR 1961

Pagination or Media Count : 1

Abstract : Measurements of the brightness of the lunar surface and the absolute measurements of brightness were reduced. Supposing the surface of the continents and the surface of the seas as similar in all points of the lunar disk, average coefficients of brightness (brightness factor, albedo) were deduced for various combinations of the angles of incidence and reflection. Results related with the plane of incidence of the solar rays for seas and for continents are given. If the results are represented in the form of a polar diagram of reflectivity (diffusion function), then a group of curves is obtained, extremely extended in the direction to the sun at any angles of incidence of solar rays. Curves for the seas are similar to those for the continents. The similarity of the character of curves shows that the unevenness of the lunar surface is extreme and is the same for the seas and the continents. Diffusion diagram of the moon exceeds considerably the investigated terrestrial samples according to their extension. This relation shows that the surface of the moon is covered with extremely porous matter, reminding slags of a spongy structure. (Author)

Descriptors :   *BRIGHTNESS, *EXTRATERRESTRIAL TOPOGRAPHY, *MOON, *OPTICAL ANALYSIS, DETERMINATION, LIGHT, MEASUREMENT, PHOTOMETERS, REFLECTION, REFRACTIVE INDEX, SURFACE PROPERTIES, TABLES(DATA), TERRAIN

Distribution Statement : APPROVED FOR PUBLIC RELEASE