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The Rotary-Vane Attenuator as an Interlaboratory Standard
From Abstract: "This paper presents a comprehensive report on the measurement and the use of rotary-vane attenuator as an interlaboratory standard."
Date:
November 1975
Creator:
Larson, Wilbur
Object Type:
Report
System:
The UNT Digital Library
Interactions of High Energy Particles With Nuclei
Report discussing elastic scattering and diffractive production processes induced in nuclear targets by high energy projectiles. Special attention is paid to the interaction of high energy hadrons and photons. The common features of all these processes are emphasized throughout the article: The multiple scattering and shadowing processes inside of the target nuclei. An effort is made to develop a unified way of treating nuclear interactions of particles which are either hadrons or exhibit some hadronic components in such interactions.
Date:
September 1975
Creator:
Czyz, Wieslaw
Object Type:
Report
System:
The UNT Digital Library
Tables of Spectral-Line Intensities: Part 1, Arranged by Elements
From Abstract: "Comparisons with other other intensity measurements in individual spectra indicate that the National Bureau of Standards spectral-line intensities may have average errors of 20 percent, but first of all they provide uniform quantitative values for the seventy chemical elements commonly determined by spectrochemists. These data are presented by element in part I, and all 39000 observed lines are given in order of wavelength in part II."
Date:
May 1975
Creator:
Meggers, William F.; Corliss, Charles H. & Scribner, Bourdon F.
Object Type:
Report
System:
The UNT Digital Library
Tables of Spectral-Line Intensities: Part 2 - Arranged by Wavelengths
From Preface: "This new edition of the NBS Tables of Spectral-Line Intensities incorporates three improvements on the original edition of 1961. In the original edition only about 25 000 of the 39 000 lines in the tables had been classified. In the ensuing thirteen years, about 8500 more lines (chiefly rare-earths) have been classified and the new classifications are here incorporated."
Date:
May 1975
Creator:
Meggers, William F.; Corliss, Charles H. & Scribner, Bourdon F.
Object Type:
Report
System:
The UNT Digital Library
Thermocouple Reference Tables Based on the IPTS-68: Reference Tables in Degrees Fahrenheit for Thermoelements versus Platinum (Pt-67)
Report presenting tables as a supplement to those given in NBS Monograph 125. Tables were calculated from the power series expansions presented in that Monograph. They are based upon the absolute electrical units and the International Practical Temperature Scale of 1968 (IPTS-68). Reference tables for several thermoelements versus platinum (Pt-67) are given with values of the thermoelectric voltage as a function of temperature in degrees Fahrenheit. Only tables for standard letter-designated thermoelements are included.
Date:
March 1975
Creator:
Powell, Robert L. & Burns, George W.
Object Type:
Report
System:
The UNT Digital Library
Standard X-ray Diffraction Powder Patterns: Section 12. Data for 57 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:
February 1975
Creator:
McMurdie, Howard F.; Morris, Marlene C.; Evans, Eloise H.; Paretzkin, Boris; de Groot, Johan H.; Hubbard, Camden R. et al.
Object Type:
Report
System:
The UNT Digital Library
Analysis of Optically Excited Mercury Molecules
Report presenting new measurement techniques used to obtain potential curves, f-values, and kinetic behavior for Hg2. The Hg2 molecule is representative of a class of molecules which have dissociative ground states and bound excited states. It can therefore be used as a prototype of this class of molecules which are of interest as potential new laser candidates. Because of the non-bound ground state, standard absorption spectroscopic techniques cannot be used to obtain the necessary information about the excited states.
Date:
January 1975
Creator:
Drullinger, R. E.; Hessel, M. M. & Smith, E. W.
Object Type:
Report
System:
The UNT Digital Library
Relativistic Many-Body Bound Systems
Report containing "[t]he principles and the mathematical details of a fully relativistic nuclear theory" (p. v). Appendix begins on page 124.
Date:
1975
Creator:
Danos, Michael & Gillet, Vincent
Object Type:
Report
System:
The UNT Digital Library
The Role of Standard Reference Materials in Measurement Systems
Report is a guide to Standard Reference Materials (SRM's) and should be useful to all users of SRM's particularly those in countries developing national measurement systems. It is not intended to be an exhaustive description of the NBS-SRM program, but rather a review of the role SRM's play in the measurement system, how SRM's are certified, and what the certification means. To illustrate the use of SRM's, several selected industries are described in which SRM's have made significant contributions.
Date:
January 1975
Creator:
Cali, J. P.; Mears, T. W.; Michaelis, R. E.; Reed, W. P.; Seward, R. W.; Stanley, C., L. et al.
Object Type:
Report
System:
The UNT Digital Library
The Theory of the Optical Wedge Beam Splitter
Report discussing optical wedge beam splitters and the basic theory for computing the ratio of the intensity of the incident beam to the intensity of any selected emerging beam and also for computing the direction of the emerging beam, assuming that the wedge angle, index of refraction, angle of incidence, and number of reflections are known.
Date:
October 1974
Creator:
Beers, Yardley
Object Type:
Report
System:
The UNT Digital Library
The Measurement of Lumped Parameter Impedance: A Metrology Guide
Scope of the Guide: "This guide is not all-inclusive of the subject of impedance measurement and the reader should understand at the outset what he can or cannot expect to find. To help in establishing the bounds of subject matter included, consider the ideal impedance-measuring instrument as having the following the characteristics and capabilities: (1) unrestricted frequency range (2) unrestricted impedance range (3) unrestricted capabilities with respect to bias, ambience, applied power, etc. (4) error free (5) performs measurements instantaneously (6) zero acquisition cost (7) zero operating cost."
Date:
June 1974
Creator:
Jones, R. N. & Anson, W. J.
Object Type:
Report
System:
The UNT Digital Library
The Measurement of Noise Performance Factors: A Metrology Guide
From Introduction: "The purpose of this guide is to describe, discuss, and analyze methods of measuring the average noise factor and average effective input noise temperature of an electronic transducer."
Date:
June 1974
Creator:
Arthur, M. G. & Anson, W. J.
Object Type:
Report
System:
The UNT Digital Library
Time and Frequency: Theory and Fundamentals
From Abstract: "This is a tutorial Monograph describing various aspects of time and frequency (T/F). Included are chapters relating to elemental concepts of precise time and frequency; basic principles of quartz oscillators and atomic frequency standards; historical review, recent progress, and current status of atomic frequency standards; promising areas for developing future primary frequency standards; relevance of frequency standards to other areas of metrology including a unified standard concept; statistics of T/F data analysis coupled with the theory and construction of the NBS atomic time scale; an overview of T/F dissemination techniques; and the standards of T/F in the USA. The Monograph addresses both the specialist in the field as well as those desiring basic information about time and frequency."
Date:
May 1974
Creator:
Blair, Byron E.
Object Type:
Report
System:
The UNT Digital Library
Thermocouple Reference Tables Based on the IPTS-68
From Abstract: "Revised reference data for thermocouples have been generated in a cooperative program between groups of the National Bureau of Standards in Boulder and Gaithersburg.This Monograph contains tables, analytic expressions, various approximations, and explanatory text.
Date:
March 1974
Creator:
Powell, Robert L.; Hall, William J.; Hyink, Clyde H., Jr.; Sparks, Larry L.; Burns, George W.; Scroger, Margaret G. et al.
Object Type:
Report
System:
The UNT Digital Library
Standard X-ray Diffraction Powder Patterns: Section 11. Data for 70 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:
February 1974
Creator:
Swanson, Howard E.; McMurdie, Howard F.; Morris, Marlene C.; Evans, Eloise H. & Paretzkin, Boris
Object Type:
Report
System:
The UNT Digital Library
Mass and Mass Values
Report discussing the different bases for determining mass values and instances where these differences may be crucial. The first part is a historical summary of weighing, standards, and the assignment of value; and the interfacing of mass measurements with civilization. The second part discusses in detail the methods of assigning mass values. Ways to convert from values on one basis to values on another basis are discussed.
Date:
January 1974
Creator:
Pontius, Paul E.
Object Type:
Report
System:
The UNT Digital Library
MeV Total Neutron Cross Sections
From Introduction: "This report is a compilation of the MeV Total Neutron Cross Section data measured at the U.S. National Bureau of Standards."
Date:
January 1974
Creator:
Schwartz, Robert B.; Schrack, Roald A. & Heaton, H. Thompson, Jr.
Object Type:
Report
System:
The UNT Digital Library
Graphical Recoupling of Angular Momenta
Report presenting a diagrammatic method for solving angular momentum recoupling problems. It is shown that a few graphical elements with a set of rules for their use lead to the solution of many types of recoupling problems in an intuitive and systematic way. Several examples are given together with exercises to develop the reader's facility with the method.
Date:
October 1973
Creator:
Lehman, D. R. & O'Connell, J. S.
Object Type:
Report
System:
The UNT Digital Library
A Compilation and Evaluation of Mechanical, Thermal, and Electrical Properties of Selected Polymers
From Abstract: "This compilation abstracts original experimental data on the mechanical, thermal, and electrical properties of six commercially available polymers. The data are also summarized and a brief description of each polymer is included."
Date:
September 1973
Creator:
Schramm, R. E.; Clark, A. F. & Reed, R. P.
Object Type:
Report
System:
The UNT Digital Library
Properties of Glasses in Some Ternary Systems Containing BaO and SiO2
Report discussing the glass forming regions in six ternary oxide systems containing BaO, Si02, and a third oxide. The properties of the resulting glasses were measured and the results reported. The data on refractive indices, dispersions, and specific volumes were evaluated by computer methods in an attempt to identify "substructures" containing the cations present in the glasses.
Date:
September 1973
Creator:
Cleek, Given W. & Babcock, C. L.
Object Type:
Report
System:
The UNT Digital Library
Thermal Conductivity of Solids At Room Temperature and Below: A Review and Compilation of the Literature
From Abstract: "An extensive compilation is given of the measured values of thermal conductivity for nearly all solid materials from room temperature down to 0.02 kelvin. Experimental methods and physical phenomena are discussed in the text and coded in the tables for references for which curves are shown."
Date:
September 1973
Creator:
Childs, Gregg E.; Ericks, Lewis J. & Powell, Robert L.
Object Type:
Report
System:
The UNT Digital Library
Applications of Waveguide and Circuit Theory to the Development of Accurate Microwave Measurement Methods and Standards
Report issued by the Bureau of Standards over "the basic theory and analytical methods used in the development of accurate microwave measurement methods and standards" (p. x). These methods are presented and discussed. This report includes tables, illustrations, and photographs.
Date:
August 1973
Creator:
Beatty, R. W.
Object Type:
Report
System:
The UNT Digital Library
The Divergent Beam (Kossel) X-Ray Method and Its Uses in Measuring Strain Contours in an Individual Grain of Fe-3 Weight Percent Si Transformer Sheet
From Abstract: "The results showed that a variable strain distribution existed in the alloy sheet at the time it was ready for insertion into a transformer core. Small applied comprehensive and tensile loads tended to rearrange this variable strain distribution but not appreciably alter the total stored elastic energy."
Date:
August 1973
Creator:
Yakowitz, Harvey
Object Type:
Report
System:
The UNT Digital Library
Survey of the Properties of the Hydrogen Isotopes Below Their Critical Temperatures
The survey covers PVT, thermodynamic, thermal, transport, electrical radiative and mechanical properties.
Date:
August 1973
Creator:
Roder, H. M.; Childs, G. E.; McCarty, R. D. & Angerhofer, P. E.
Object Type:
Report
System:
The UNT Digital Library