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W.H. Wilson

Publications and source records attributed to W.H. Wilson.

4 recordsLinked to original sources
USGS1970

Specific heats of lunar surface materials from 90 to 350 degrees Kelvin

The specific heats of lunar samples 10057 and 10084 returned by the Apollo 11 mission have been measured between 90 and 350 degrees Kelvin by use of an adiabatic calorimeter. The samples are representative of type A vesicular basalt-like rocks and of finely divided lunar soil. The specific heat of these materials changes smoothly from about 0.06 calorie per gram per degree at 90 degrees Kelvin to about 0.2 calorie per gram per degree at 350 degrees Kelvin. The thermal parameter γ = (kρC) -½ for the lunar surface will accordingly vary by a factor of about 2 between lunar noon and midnight.

Science↗
USGS1967

Pressure derivatives of elastic moduli of fused quartz to 10 kb

Measurements of the longitudinal and shear moduli were made on fused quartz to 10 kb at 24·5°C. The anomalous behavior of the bulk modulus K at low pressure, &#x2202;K &#x2202;P &lt; 0 "> ∂K∂P< 0 , begins to approach the “normal” behavior of solids, &#x2202;K &#x2202;P &gt; 0 "> ∂K∂P> 0 , at higher pressures. The pressure derivative of the rigidity modulus &#x2202;G &#x2202;P "> ∂G∂P remains constant and negative for the pressure range covered. A 15-kb hydrostatic pressure vessel is described for use with ultrasonic pulse instrumentation for precise measurements of elastic moduli and density changes with pressure. The placing of the transducer outside the pressure medium, and the use of C -ring pressure seals result in ease of operation and simplicity of design.

Journal of Physics and Chemistry of Solids↗
USGS1953

Stratigraphic sections of the Phosphoria Formation in Montana, 1949-50: part I

The U.S. Geological Survey has recently measured and sampled the Phosphoria formation at many localities in Montana and other western states. These data will not be fully synthesized for many years, but segments of the data, accompanied by little or no interpretation, are published as preliminary reports as they are assembled. This report, which contains abstracts of the sections measured in southwestern Montana (fig. 1) is one of this series and is the third Montana report; it includes about half of the data gathered in Montana during 1949 and 1950. The field and laboratory procedures adopted in these investigations are described rather fully in a previous report (McKelvey and others, 1953). Many people have taken part in this investigation. The program which this work is a part was organized by V. E. McKelvey and the field program was supervised by R. W. Swanson, T. M. Cheney, J. L. Elliott, F. D. Frieske, R. F. Gosman, R. S. Jones, B. K. Replogle, and R. G. Waring participated in the description of strata and the collection of samples referred to in this report. Crushing and splitting of the samples in the field was done by T. K. Rigby. The laboratory preparation of samples for chemical analysis was done in Denver, Colo., under the direction of W. P. Huleatt.

Montana↗