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  Partner: UNT Libraries Government Documents Department
 Serial/Series Title: National Bureau of Standards Reports
 Collection: Technical Report Archive and Image Library
The 1958 He4 Scale of Temperatures: Part 1. Introduction, Part 2. Tables for the 1958 Temperature Scale
Report containing information regarding He4 vapor pressure measurement as of 1958, the recent history of the vapor pressure temperature scale, and a series of tables containing these measurements. digital.library.unt.edu/ark:/67531/metadc13148/
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. digital.library.unt.edu/ark:/67531/metadc70465/
Acceleration Due to Gravity at the National Bureau of Standards
No Description digital.library.unt.edu/ark:/67531/metadc13155/
Acid-Base Behavior in Aprotic Organica Solvents
No Description digital.library.unt.edu/ark:/67531/metadc13152/
America Joins a Metric World
Pamphlet issued by the United States National Bureau of Standards discussing the Metric Conversion Act of 1975, the work of the U.S. Metric Board, and how government agencies are facilitating a switch to the metric system. digital.library.unt.edu/ark:/67531/metadc123541/
Amplitude-Probability Distributions for Atmospheric Radio Noise
No Description digital.library.unt.edu/ark:/67531/metadc13201/
Analysis of Alternating-Current Waves by the Method of Fourier, with Special Reference to Methods of Facilitating the Computations
Report issued by the Bureau of Standards over analysis of alternating currents. These currents are applied with the Fourier method. Descriptions of the method, and the results are presented. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66533/
Analysis of Coaxial Two-Terminal Conical Capacitor
No Description digital.library.unt.edu/ark:/67531/metadc13239/
Analysis of Electric Energy Usage in Air Force Houses Equipped with Air-to-Air Heat Pumps
No Description digital.library.unt.edu/ark:/67531/metadc13244/
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. digital.library.unt.edu/ark:/67531/metadc70413/
Analysis of Tentative Seismic Design Provisions for Buildings
Report issued by the U.S. National Bureau of Standards discussing an analysis of seismic design provisions for buildings with three main objectives. As stated in the introduction, "The first objective was to assist the ATC in the preparation of its report. The second objective of the study was to augment the text of the published Provisions by providing a formal, consistent documentation of the text. The third objective was to provide alternate arrangements of the Provisions that would make them more readily usable by several categories of users" (p. 1). This report includes illustrations. digital.library.unt.edu/ark:/67531/metadc171039/
Analytical and Experimental Analysis of Procedures for Testing Solar Domestic Hot Water Systems
Report issued by the National Bureau of Standards over testing procedures used for solar domestic water heating systems. Testing methods are discussed. This report includes tables, illustrations, and photographs. digital.library.unt.edu/ark:/67531/metadc38321/
Analytical Standards for Trace Elements in Petroleum Products
Report discussing a search conducted for stable, oil-soluble, organic compounds of metals (and other elements) for use in the spectrographic analysis of petroleum products. Compounds having suitable physical properties have been selected as standards. Methods are given for preparation of the compounds and for the spectrographic and chemical analysis of the chosen standards. Procedures are described for the preparation of stable solutions thereof in petroleum oils. digital.library.unt.edu/ark:/67531/metadc70443/
Annotated Bibliography on Soft X-ray Spectroscopy
Report presenting a bibliography of about 550 references of the soft X-ray literature since 1950 and through 1960. The emphasis is on the application of soft X-ray spectroscopy to the study of valence band electronic states in metals and alloys. Therefore, the spectral region of 25 to 800 angstroms involving ruled glass grating spectrometers is of principal interest. In addition to soft X-ray data, references on all pertinent aspects of the apparatus and experimental problems are included. Also listed separately are references of value in corroborating soft X-ray data with other results. Subject, author, X-ray band, material, and other indices are included. digital.library.unt.edu/ark:/67531/metadc70442/
Annual Report of the Director [of] the Bureau of Standards to the Secretary of Commerce for the Fiscal Year Ended June 30, 1921
Report describing the functions and operations of the United States Bureau of Commerce and its divisions during the fiscal year. digital.library.unt.edu/ark:/67531/metadc100696/
Annual Variation of Temperature Field and Heat Transfer Under Heated Ground Surfaces (Slab-on-Grade Floor Heat Loss Calculation)
Report issued by the National Bureau of Standards over studies conducted on sub-surface temperatures and heat transfer. Testing methods are discussed. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc38338/
An Apparatus for Measuring the Relative Wear of Sole Leathers, and the Results Obtained with Leather from Different Parts of a Hide
Technical paper issued by the Bureau of Standards over studies conducted on the quality of sole leather. As stated in the introduction, "the development of a simple method for quickly determining the durability of sole leather seemed desirable, and this paper discusses a laboratory apparatus designed for this purpose and also presents the results of tests made to date to determine the relative wear of leather from different parts of the hide" (p. 3). This paper includes illustrations, and photographs. digital.library.unt.edu/ark:/67531/metadc66508/
Application of Method of Characteristics to Model the Transport of Discrete Solids in Partially-Filled Pipe Flow
Report issued by the National Bureau of Standards over transporting discrete solids in partially-filled flow pipes. The methods and application of drainage flow are discussed. This report includes tables, illustrations, and photographs. digital.library.unt.edu/ark:/67531/metadc38320/
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. digital.library.unt.edu/ark:/67531/metadc13177/
Atomic Energy Levels in Crystals
Report discussing discrete energy levels observed within certain crystals which are due to perturbations of energy levels of the free ion by an electrostatic field arising from the crystal lattice. The analytic procedures for determining the field from the charge configuration are given, and the resulting fields are classified according to their symmetry. After a general survey of group-theoretical ideas, the applicable groups are analyzed in detail, and characters appropriate for both integral and half-integral angular momenta of the free ion are tabulated. Text includes tabulations, equations, and matrices using Wigner and Racah coefficients. digital.library.unt.edu/ark:/67531/metadc70427/
Automatic Indexing: A State-of-the-Art Report
Report issued by the U.S. National Bureau of Standards discussing results of a survey conducted on automatic mechanized indexing and data processing. As stated in the introduction, "it has concentrated on the major developments in and related demonstrations of automatic indexing potentialities. Examples are also given of indexes compiled by machine and of potentially related research efforts in such areas as natural language text searching, statistical association techniques used for search and retrieval, and proposed systems for concept processing" (p. 1). This report includes an illustration. digital.library.unt.edu/ark:/67531/metadc171070/
Automatic Indexing: A State-of-the-Art Report
Report presenting a state-of-the-art survey of automatic indexing systems and experiments. It was conducted by the Research Information Center and Advisory Service on Information Processing, Information Technology Division, Institute for Applied Technology, National Bureau of Standards. Consideration is first given to indexes compiled by or with the aid of machines, including citation indexes. Advantages, disadvantages, and possibilities for modification and improvement are discussed. Experiments in automatic assignment indexing are summarized. Related research efforts in such areas as automatic classification and categorization, computer use of thesauri, statistical association techniques, and linguistic data processing are described. A major question is that of evaluation, particularly in view of evidence of human inter-indexer inconsistency. It is concluded that indexes based on words extracted from text are practical for many purposes today. digital.library.unt.edu/ark:/67531/metadc70462/
Automatic Measurement of Network Parameters: A Survey
Report issued by the Bureau of Standards over a survey conducted on measurement methods of network parameters. As stated in the introduction, "this paper is concerned with the development of automatic methods of measuring basically the magnitudes and phase differences, or the complex ratio of two sinusoidal voltages, and applications of this capability to determining complex reflection coefficients and transmission coefficients and group delay times of electrical networks" (p. 1). This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc13187/
Automatic Typographic-Quality Typesetting Techniques: A State-of-the-Art Review
No Description digital.library.unt.edu/ark:/67531/metadc13276/
Basic Magnetic Quantities and the Measurement of the Magnetic Properties of Materials
No Description digital.library.unt.edu/ark:/67531/metadc13240/
Bibliography and Index on Vacuum and Low Pressure Measurement
No Description digital.library.unt.edu/ark:/67531/metadc13229/
Bibliography and Index on Vacuum and Low Pressure Measurement, January 1960 to December 1965
No Description digital.library.unt.edu/ark:/67531/metadc13228/
Bibliography of Temperature Measurement: January 1953 to June 1960
Report presenting more than 500 references to the field of temperature measurement. These references were collected from two general sources: Scientific and technical literature and government reports. The period covered is from 1953 to June 1960, with some from earlier dates. 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. digital.library.unt.edu/ark:/67531/metadc70435/
Bibliography of Temperature Measurement: July 1960 to December 1962
Report presenting 700 additional references to the field of temperature measurement as a supplement to NBS Monograph 27, "Bibliography of Temperature Measurement, January 1953 to June 1960" issued April 6, 1961. These references were collected from two general sources: Scientific and technical literature and government reports. The period covered is from July 1960 to December 1962 with some earlier references which were found later. The arrangement of material is the same as in Monograph 27. digital.library.unt.edu/ark:/67531/metadc70433/
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. digital.library.unt.edu/ark:/67531/metadc70434/
Bibliography on Atomic Transition Probabilities
Report presenting a bibliography on atomic transition probabilities. The papers are arranged according to elements and stages of ionization, and the method employed and class of transitions are indicated behind each reference. Only articles on discrete transitions, both permitted and forbidden, are listed. Also included is a supplementary list of papers dealing with transition probabilities from a general point of view, a table showing the availability of numerical material on the individual atoms and ions, and a table of conversion factors. digital.library.unt.edu/ark:/67531/metadc70441/
Bibliography on Molecular and Crystal Structure Models
Report that briefly describes many of the models of crystal and molecular structures which have appeared in the literature, and presents a bibliography of the publications, grouped according to model types, which describe the models in more detail. digital.library.unt.edu/ark:/67531/metadc70495/
Binary Phase Diagrams of Transition Elements
Chart issued by the U.S. National Bureau of Standards illustrating the systematic relationships between phase diagrams of transition elements. This chart includes color illustrations. digital.library.unt.edu/ark:/67531/metadc171055/
BOLOVAC Systems for Measuring Electrical Quantities From 0.5 MHz Through M`icrowaves
No Description digital.library.unt.edu/ark:/67531/metadc13164/
Brief History of Measurement Systems: with a Chart of the Modernized Metric System
Pamphlet issued by the United States National Bureau of Standards providing an overview of the English system of measurement used in the United States and of the metric system. The internal pages of the pamphlet contain a chart labeled "The Modernized Metric System" which includes tables of common conversions and a chart of the seven base units: meter/length, kilogram/mass, second/time, ampere/electric current, kelvin/temperature, mole/amount of substance, and candela/luminous intensity, as well as two supplementary units: radian/plane angle and steradian/solid angle. There is also a graphic representation of yards versus meters in ruler form at the bottom. digital.library.unt.edu/ark:/67531/metadc123542/
The Calculation of Rotational Energy Levels and Rotational Line Intensities in Diatomic Molecules
Report describing procedures for making quantum mechanical calculations of rotational energy levels and rotational line intensities in diatomic molecules. The procedures are illustrated by sample calculations. A familiarity with the material of this report should enable a practicing electronic spectroscropist to carry out, though in a rather mechanical way, his own theoretical calculations for molecules under experimental investigation. digital.library.unt.edu/ark:/67531/metadc70400/
Calibration of Line Standards of Length and Measuring Tapes at the National Bureau of Standards
No Description digital.library.unt.edu/ark:/67531/metadc13186/
Calibration of Liquid-in-Glass Thermometers
Report discussing important elements of thermometer design. Factors affecting the use of common types of liquid-in-glass thermometers are included together with tables of tolerances and reasonably attainable accuracies. The calculation of corrections for the temperature of the emergent stem is given in detail for various types of thermometers and conditions of use. digital.library.unt.edu/ark:/67531/metadc70461/
Calibration of Temperature Measurement Systems Installed in Buildings
Report issued by the National Bureau of Standards over calibration of thermometers for accurate temperature measurements in buildings. Methods of on-site calibration are discussed. This report includes graphs, and illustrations. digital.library.unt.edu/ark:/67531/metadc38335/
Calibration Procedures for Direct-Current Resistance Apparatus
No Description digital.library.unt.edu/ark:/67531/metadc13232/
Capacities of Stacks in Sanitary Drainage Systems for Buildings
No Description digital.library.unt.edu/ark:/67531/metadc13220/
Causes of Variation in Chemical Analyses and Physical Tests of Portland Cement
Report discussing variations in comparative tests of portland cements that could lead to the rejection of a material fully conforming to specification requirements, or the acceptance of a material with undesirable chemical or physical properties. Many of the causes for variation in chemical analyses and physical test results are listed in this discussion, and remedies for some of the more frequently encountered deficiencies in apparatus and methods are suggested. digital.library.unt.edu/ark:/67531/metadc70436/
Chemistry of Cement: Proceedings of the Fourth International Symposium, Washington 1960, Volume 2
No Description digital.library.unt.edu/ark:/67531/metadc13237/
Climatic Charts and Data of the Radio Refractive Index for the United States and the World
No Description digital.library.unt.edu/ark:/67531/metadc13200/
Colorimetry
No Description digital.library.unt.edu/ark:/67531/metadc13150/
Colors of Signal Lights: Their Selection, Definition, Measurement, Production, and Use
Report discussing the selection, specifications, and use of signal-light colors. It discusses the nature of the problem, and the mathematical representation, recognition, production, control, and use of such colors. The characteristics of different types of chromaticity boundaries and the purpose and effect of the requirement for similarity of chromaticity characteristics are given special consideration. The treatment is varied according to the intended use. The discussion of the control of colors and the section on the use of colors are nontechnical, whereas the section on the production of signal colors is designed for the colorimetrist who is faced with the problem of selecting limit filters or drafting a specification. digital.library.unt.edu/ark:/67531/metadc70455/
Comparison of American, British, and German Standards for Metal Fits
Report issued by the Bureau of Standards discussing the comparison of American, British, and German metal fit standards. The comparisons between national standards of the three countries are presented and described. This report includes tables, and illustrations. digital.library.unt.edu/ark:/67531/metadc66516/
A Compilation and Evaluation of Mechanical, Thermal, and Electrical Properties of Selected Polymers
No Description digital.library.unt.edu/ark:/67531/metadc13175/
Compilation of the Melting Points of the Metal Oxides
Report compiling the melting points of 70 metal oxides published prior to January 1963. Both the original melting point and the equivalent value based on the International Practical Temperature Scale of 1948 are presented. Included in the survey is information on pertinent experimental details such as the method of temperature measurement, purity, furnace type, and environmental conditions. digital.library.unt.edu/ark:/67531/metadc70451/
A Complete Mode Sum for LF, VLF, ELF Terrestrial Radio Wave Fields
Report discussing the VLF, ELF propagation in the earth-ionosphere waveguide emphasizing the total field found by summing all modes which contribute appreciably. Solutions are given and calculations are made for a homogeneous isotropic ionosphere, a homogeneous ionosphere with a constant radial magnetic field imposed, and an ionosphere with a magnetic field of arbitrary dip angle. digital.library.unt.edu/ark:/67531/metadc70456/
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