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From Sundials to Atomic Clocks: Understanding Time and Frequency
Book presenting an introduction to time, timekeeping, and the uses of time information, especially in the scientific and technical areas. Serves as introductory text for laymen.
Date:
December 1977
Creator:
Jespersen, James & Fitz-Randolph, Jane
Object Type:
Book
System:
The UNT Digital Library
Geometrical Considerations and Nomenclature for Reflectance
Report issued by the U.S. National Bureau of Standards discussing specifications of reflectance and proposed nomenclature. As stated in the introduction, "this monograph presents a unified approach to the specification of reflectance in relation to the beam geometry of both the incident and the reflected flux in any reflectometer or in any application of measured reflectance data" (p. 1). This report includes illustrations.
Date:
October 1977
Creator:
Nicodemus, F. E.; Richmond, J. C.; Hsia, J. J.; Ginsberg, I. W. & Limperis, T.
Object Type:
Report
System:
The UNT Digital Library
Geometrical Considerations and Nomenclature for Reflectance
Report presenting a unified approach to the specification of reflectance, in terms of both incident- and reflected- beam geometry. Nomenclature to facilitate this approach is proposed. Nomenclature for categorizing and specifying reflectance quantities for a variety of different beam configurations (both incident and reflected beams) is described, and all are defined and interrelated in terms of the bidirectional reflectance-distribution function. The conditions under which the formalism can be applied, including situations involving considerable sub-surface scattering, are carefully established. The entire treatment is limited to the domain of classical geometrical-optics radiometry and does not take into account interference and diffraction phenomena, such as are frequently encountered with highly coherent radiant flux.
Date:
October 1977
Creator:
Nicodemus, F. E.; Richmond, J. C.; Hsia, J. J.; Ginsberg, I. W. & Limperis, T.
Object Type:
Report
System:
The UNT Digital Library
Standard X-ray Diffraction Powder Patterns: Section 14. Data for 68 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:
September 1977
Creator:
Morris, Marlene C.; McMurdie, Howard F.; Evans, Eloise H.; Paretzkin, Boris; de Groot, Johan H.; Newberry, Rainer et al.
Object Type:
Report
System:
The UNT Digital Library
Corrosion and Protection of Steel Piles in a Natural Seawater Environment
From Introduction: "This paper describes some results of the first eight years of a fifteen year program in which a variety of coating and catholic protection systems are evaluated on their ability to protect steel piles in offshore conditions at Dam Neck, Virginia. It includes a description of the methods used in the evaluation and the results found on these systems."
Date:
June 1977
Creator:
Escalante, E.; Iverson, W. P.; Gerhold, W. F.; Sanderson, B. T. & Alumbaugh, R. L.
Object Type:
Report
System:
The UNT Digital Library
Stress Corrosion Cracking Control Measures
From Abstract: "This publication attempts to diminish the incidence of stress corrosion failures by assembling the available practical measures to avoid or minimize the problem and present these measures in a form comprehensible to those persons responsible for the design, fabrication, and maintenance of new structures."
Date:
June 1977
Creator:
Brown, B. F.
Object Type:
Report
System:
The UNT Digital Library
Visual Range: Concepts, Instrumental Determination, and Aviation Applications
From Abstract: "This document is a review of the principles, procedures, and instruments used in the measurement of visual range. The fundamental concepts of the visual range of the objects and lights are discussed. The principles of operation of the several classes of atmospheric attenuation meters are reviewed and representative instruments are described."
Date:
June 1977
Creator:
Douglas, C. A. & Booker, R. L.
Object Type:
Report
System:
The UNT Digital Library
Recommended Practice for the Use of Metric (SI) Units in Building Design and Construction
Report issued by the U.S. National Bureau of Standards discussing the use of metric units of measurement during construction. As stated in the scope, "this document outlines a selection of SI units, with multiples and sub-multiples, for general use in building design and construction" (p. 1). This report includes tables, and illustrations.
Date:
April 1977
Creator:
Milton, Hans J.
Object Type:
Report
System:
The UNT Digital Library
Relativistic Many-Body Bound Systems: Electromagnetic Properties
Report presenting the formulae for the calculation of the electron scattering form factors, and of the static magnetic dipole and electric quadrupole moments, of relativistic many-body bound systems. The framework, given in NBS Monograph 147, is relativistic quantum field theory in the Schrodinger picture ; the physical particles, i.e. the solutions of the interacting fields, are given as linear combinations of the solutions of the free fields, called the parton fields. The parton-photon interaction is taken as given by minimal coupling, p -> p - eA ; in addition the contribution of the photon-vector meson vertex of the vector dominance model is derived.
Date:
April 1977
Creator:
Danos, Michael & Gillet, Vincent
Object Type:
Report
System:
The UNT Digital Library
[Letter from the United States National Bureau of Standards]
Letter from the acting director of the U.S. National Bureau of Standards introducing the materials in the NBS Metric Kit. The kit was compiled to support the Metric Conversion Act, signed in December 1975, which would convert measurements used in the United States to the metric system of measurement. Includes an order form for additional materials and the metric kit envelope.
Date:
1977?
Creator:
United States. National Bureau of Standards.
Object Type:
Letter
System:
The UNT Digital Library
NBS Metric Kit: Official Metric Information
Kit issued by the U.S. National Bureau of Standards containing materials regarding conversion to the metric system of measurement. The kit includes a letter of introduction; an order form; two plastic cards printed with rulers and conversion information; and four booklets that discuss how the metric system is different from the English system of measurement, why America should switch, and reference materials for converting.
Date:
1977?
Creator:
United States. National Bureau of Standards.
Object Type:
Collection
System:
The UNT Digital Library
Some References on Metric Information, Including a Chart on All You Need to Know About Metric
Pamphlet issued by the United States National Bureau of Standards containing a list of government pamphlets, reports, and other resources related to the metric system of measurement. It includes a form for ordering materials from the Government Printing Office as well as an illustrated description of everyday conversions for weight, volume, length, and temperature.
Date:
January 1977
Creator:
United States. National Bureau of Standards.
Object Type:
Pamphlet
System:
The UNT Digital Library
Computers, Health Records, and Citizen Rights
Report issued by the Bureau of Standards over studies on the benefits of computerized record-keeping. Medical records were chosen for the studies, and they also focus on patient privacy and rights. This report includes tables, and illustrations.
Date:
December 1976
Creator:
Westin, Alan F.; Baker, Michael A.; Annas, George J.; Silberberg, Richard; Broder, Jamie; Isbell, Florence et al.
Object Type:
Report
System:
The UNT Digital Library
What About Metric?
Pamphlet issued by the United States National Bureau of Standards discussing the reasons that the U.S. decided passed the Metric Conversion Act of 1975 and provides tables, illustrations, and formulas for converting between customary units and metric units of measuring weight, length, volume, and temperature. It also includes a discussion of how one might expect to use metric measurements in the marketplace, in the home, and at work.
Date:
October 1976
Creator:
Barbrow, Louis E. & Halpin, Suellen
Object Type:
Pamphlet
System:
The UNT Digital Library
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.
Date:
August 1976
Creator:
United States. National Bureau of Standards.
Object Type:
Pamphlet
System:
The UNT Digital Library
The Dynamics of Fields of Higher Spin
Report presenting a relativistic theory of motion that is free of many of the difficulties common in relativistic equations of motion. This Lagrangian theory describes fields and particles with arbitrary mass and charge and having any discrete spin, integer or half integer.
Date:
August 1976
Creator:
Hayward, Raymond W.
Object Type:
Report
System:
The UNT Digital Library
The First Spectrum of Hafnium (HF I)
Report continuing W. K. Meggers' previous analysis in LS-coupling. This coupling is not rigorous in Hf I, and many intervals are irregular. Consequently, the levels are given also in numerical order with the even and odd levels presented in separate tables. The long line lists are given in two Appendices: Appendix A contains the observed Zeeman data for the individual lines, 531 in all; Appendix B consists of the complete line list of observed and classified lines. By far the greater part of the analysis is that of Meggers.
Date:
July 1976
Creator:
Meggers, William F. & Moore, Charlotte E.
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
June 1976
Creator:
Beatty, Robert William
Object Type:
Report
System:
The UNT Digital Library
Standard X-ray Diffraction Powder Patterns: Section 13. Data for 58 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 1976
Creator:
Morris, Marlene C.; McMurdie, Howard F.; Evans, Eloise H.; Paretzkin, Boris; de Groot, Johan H.; Hubbard, Camden R. et al.
Object Type:
Report
System:
The UNT Digital Library
[United States National Bureau of Standards Metric Conversion Card]
Conversion card issued by the United States National Bureau of Standards containing conversion information for length, area, mass (weight), volume, and temperature (exact). The front lists "Approximate Conversions to Metric Measures" and includes a continuum of temperatures at the bottom and a centimeter ruler along the right side (to 8 cm.). The back of the card lists "Approximate Conversions from Metric Measures" and includes an inch ruler along the right side (to 3 in.).
Date:
May 1976
Creator:
United States. National Bureau of Standards.
Object Type:
Physical Object
System:
The UNT Digital Library
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.
Date:
February 1976
Creator:
United States. National Bureau of Standards.
Object Type:
Pamphlet
System:
The UNT Digital Library
Liquid-in-Glass Thermometry
Report containing information of general interest to manufacturers and users of liquid-in-glass thermometers. This report supersedes Monograph 90. Instructions explaining how to submit a thermometer to the National Bureau of Standards for calibration are provided, and the techniques and equipment, such as stirred liquid comparison baths, used in the calibration procedures are described. A discussion of important principles of acceptable thermometer design and factors affecting their use is included. Listed are tables of tolerances reflecting good manufacturing practices and reasonably attainable accuracies expected with liquid-in-glass thermometers. The calculation of corrections for the temperature of the emergent stem is given in detail for various types of thermometers and conditions of use.
Date:
January 1976
Creator:
Wise, Jacquelyn A.
Object Type:
Report
System:
The UNT Digital Library
A Gage Block Measurement Process Using Single Wavelength Interferometry
Report describing the interferometric measurement process using a laser light source and a Kosters type gage block interferometer. Continuous evaluation and refinement of the process is aided by statistical treatment and control chart techniques. All error sources, both random and systematic, are evaluated and the process is maintained in a state of statistical control.
Date:
December 1975
Creator:
Beers, John S.
Object Type:
Report
System:
The UNT Digital Library
Measurement Assurance Program - A Case Study: Length Measurements. Part 1. Long Gage Blocks (5 in to 20 in)
From Abstract and Introduction: "This paper is, in essence, a report on the extension of the techniques first suggested in NBS Monograph 103 "Realistic Uncertainties and the Mass Measurement Process" to the area of length measurement. This paper covers the progress to date on the long gage blocks (from 5 to 20 in the length). The purpose of this purpose is to verify the closure between the "old" process and the "new" process, and to describe the present "points of departure" upon which some of the current assigned length values are based."
Date:
November 1975
Creator:
Pontius, Paul E.
Object Type:
Report
System:
The UNT Digital Library