ArticlesOther Physical Properties

Thermal Radiation Properties and Thermal Conductivity of Lunar Material

Science  30 Jan 1970:
Vol. 167, Issue 3918, pp. 724-726
DOI: 10.1126/science.167.3918.724


The thermal radiation properties were measured for lunar fines and chips from three different lunar rocks. Measurements for the fines were made at atmospheric pressure and at a pressure of 10-5 torr or lower. The directional reflectance was obtained over a wavelength range of 0.5 to 2.0 microns for angles of incidence up to 60 degrees. The bidirectional reflectance—the distribution of reflected light—was measured for white light angles of illumination up to 60 degrees. The thermal conductivity was measured over a temperature range 200 to 400°K under vacuum conditions.