Efflux of Gases Through Small Orifices (open access)

Efflux of Gases Through Small Orifices

Scientific paper issued by the Bureau of Standards over studies conducted on gas effusion rates. The methods used and the results of the studies are presented and discussed. This paper includes tables, and illustrations.
Date: January 28, 1920
Creator: Buckingham, Edgar & Edwards, Junius David
System: The UNT Digital Library
Abscissas and Weights for Guassian Quadrature For N=2 to 100, and N-125, 150, 175, 200 (open access)

Abscissas and Weights for Guassian Quadrature For N=2 to 100, and N-125, 150, 175, 200

The abscissas and weights for Gaussian Quadrature of order N = 2 to 100,and N = 125, 150, 175, and 200 are given. The abscissas are given to twenty-four places and the error is estimated to be no more than 1 unit in the last place. The weights are given to twenty-three places and the error is estimated to be no more than 1 unit in the last place.
Date: December 28, 1966
Creator: Love, Carl H.
System: The UNT Digital Library
Trace Characterization: Chemical and Physical (open access)

Trace Characterization: Chemical and Physical

From Introduction: "This symposium focuses attention on the growing awareness of the necessity for developing and using better methods for characterizing solids. Many of the most interesting properties of solids depend directly upon these small concentrations of impurities and defects, and the illustration of this is a principal theme of this paper."
Date: April 28, 1967
Creator: Meinke, W. Wayne & Scribner, Bourdon F.
System: The UNT Digital Library
Bibliography of Temperature Measurement: July 1960 to December 1965 (open access)

Bibliography of Temperature Measurement: July 1960 to December 1965

Report combining National Bureau of Standards Monograph 27 with the references given in Supplement 1 (May 13, 1963) and issued as a single publication to assist users of this material. References concern the field of temperature measurement. These references were collected from two general sources: Scientific and technical literature and government reports. References are divided into a number of categories based on the type of instrument used. Some references to calibration of instruments and to scientific theories upon which temperature measurement is based are also presented.
Date: April 28, 1967
Creator: Olsen, Lief O. & Halpern, Carl
System: The UNT Digital Library
A New Interferential Dilatometer (open access)

A New Interferential Dilatometer

Scientific paper issued by the Bureau of Mines over development of a dilatometer. The instrument is used in tests of thermal expansion. The methods are presented and discussed. This paper includes an illustration.
Date: February 28, 1920
Creator: Priest, Irwin G.
System: The UNT Digital Library
Standard X-ray Diffraction Powder Patterns: Section 4. Data for 103 Substances (open access)

Standard X-ray Diffraction Powder Patterns: Section 4. Data for 103 Substances

Report documenting standard x-ray diffraction powder patterns for various compounds, intended to replace previous data or provide information for new substances. It describes the methods and, for each substance, outlines any previous data as well as information about the sample used and structural data, with a table of diffraction patterns.
Date: June 28, 1966
Creator: Swanson, Howard E.; Morris, Marlene C. & Evans, Eloise H.
System: The UNT Digital Library
Tensile and Impact Properties of Selected Materials From 20 to 300 ºK (open access)

Tensile and Impact Properties of Selected Materials From 20 to 300 ºK

Report giving the tensile and impact properties of structural materials that were experimentally determined at temperatures from 20 to 300 ºK. Tensile properties of a few materials were also determined at 4 ºK. The properties experimentally determined were the yield strength, tensile strength, elongation, and reduction of area, the stress versus strain curve, and the impact energy. The test equipment and procedures are described. The individual data are presented in tables, and the average results are displayed in graphs.
Date: June 28, 1963
Creator: Warren, K. A. & Reed, R. P.
System: The UNT Digital Library