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Oleary, B. T.

Publications and source records attributed to Oleary, B. T..

At least 19 records

Some physical properties of Apollo 12 lunar samples

The size distribution of the lunar fines is measured, and small but significant differences are found between the Apollo 11 and 12 samples as well as among the Apollo 12 core samples. The observed differences in grain size distribtuion in the core samples are related to surface transportation processes, and the importance of a sedimentation process versus meteoritic impact gardening of the mare grounds is discussed. The optical and the radio frequency electrical properties are measured and are also found to differ only slightly from Apollo 11 results.

Gold, T.↗

Optical and high frequency electrical properties of the lunar sample

Reflectivity and polarization laws for the powder sample and its spectrum are close to the mean for the lunar maria. Solid samples show a marked absorption feature at 1 micron. The low albedo appears to be due to a surface coating on dust grains rather than volume absorption. The high frequency electrical properties resemble those of a fine powder made from typical dense terrestrial rocks, and are consistent with previous ground-based radar estimates. The differential mass spectrum is almost constant from 100 micron particles down to 0.1 micron; most particles are smaller than 0.3 micron. Their shapes disclose a variety of generation processes.

Gold, T.↗

Moon - Two new mascon basins.

Lunar localized subsurface mass concentration association with circular maria, noting two large mascon basins from gravity data and orbital photography

Campbell, M. J.↗

The opposition effect of Mars.

Photometric data on Mars opposition effect /nonlinear brightness surge at zero alpha phase angle/ noting phase curve steepness

PHASE ANGLE↗

Visible polarization data of mars.

Discrepancy in photometric and visible polarimetric determinations of Mars surface pressure attributed to aerosol particles in Martian atmosphere

POLARIZED LIGHT↗