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WR15 Microwave Calorimeter and Bolometer Unit
Descriptions of the principal changes in the calorimeter and bolometer unit from the WR28 models of a microwave serving as National Bureau of Standards standard for power measurements in the frequency range 50 to 75 GHz.
Date:
May 1972
Creator:
Harvey, Morris E.
Object Type:
Report
System:
The UNT Digital Library
Design for Better Window Performance
Matrix diagram for design and construction of windows for energy conservation in buildings.
Date:
May 1980
Creator:
Hastings, S. Robert & Driscoll, Porter
Object Type:
Report
System:
The UNT Digital Library
Glass Limit Standards Deposited at NBS for Railway, Highway, and Airways Traffic Signal Colors: History, Permanence and Colorimetric Properties
Permanence and colorimetric properties of signal glass.
Date:
June 1971
Creator:
Haupt, Geraldine W.
Object Type:
Report
System:
The UNT Digital Library
Photonuclear Reactions
Report discussing photonuclear reactions in the approximate energy range 10 to 30 MeV. Various sum rules are discussed and applied to experimental data. Several different theories are described and their predictions compared with experiment, and as often as possible open questions and discrepancies are pointed out.
Date:
August 1970
Creator:
Hayward, Evans
Object Type:
Report
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 Development of Loran-C Navigation and Timing
From Abstract: "This work traces the development of the Loran-C concept from its inception as a 100-kHz pulse hyperbolic navigation system to more recent times when it found a variety of applications to both timing and navigation."
Date:
October 1972
Creator:
Hefley, Gifford
Object Type:
Report
System:
The UNT Digital Library
X-Ray Wavelength Conversion Tables and Graphs for Qualitative Electron Probe Microanalysis
Tables and graphs constructed for electron probe x-ray spectrometers equipped with crystal changers and calibrated for LiF crystals in angstroms.
Date:
September 25, 1967
Creator:
Heinrich, Kurt F. J. & Giles, Mary Ann M.
Object Type:
Report
System:
The UNT Digital Library
Activities of the NBS Spectrochemical Analysis Section: July 1970 to June 1971
Review of the progress in research, instrumentation, and service activities of the Spectrochemical Analysis Section from July 1970 to June 1971.
Date:
January 1972
Creator:
Heinrich, Kurt F. J. & Rasberry, S. D.
Object Type:
Report
System:
The UNT Digital Library
Energy Dispersive X-Ray Spectrometry
Abstract: Energy-dispersive x-ray analysis with gas proportional detectors has been used widely in x-ray spectrochemical analysis. It was particularly useful in the detection of low-energy x-ray emission, before the commercial availability of the Blodgett-Langmuir pseudocrystals. With the development of solid-state x-ray detectors of high resolution, and improvement in associated electronics and computers, the interest in energy-dispersive x-ray analysis has increased enormously, to the point where it has replaced Bragg crystal diffraction spectrometry in many instances.
Date:
March 1981
Creator:
Heinrich, Kurt F. J.; Newbury, Dale E.; Myklebust, R. L. & Fiori, C. E.
Object Type:
Report
System:
The UNT Digital Library
NBS-INA -- The Institute for Numerical Analysis -- UCLA 1947-1954
Abstract: This is the history of the Institute for Numerical Analysis (INA) with special emphasis in its research program during the period 1947 to 1956. The Institute for Numerical Analysis was located on the campus of the University of California, Los Angeles. It was a section of the National Applied Mathematics Laboratories, which formed the Applied Mathematics Division of the National Bureau of Standards (now the National Institute of Standards and technology), under the U.S. Department of Commerce.
Date:
August 1991
Creator:
Hestenes, Magnus Rudolph & Todd, John
Object Type:
Report
System:
The UNT Digital Library
Theory of Near-Field Phased Arrays for Electromagnetic Susceptibility Testing
From introduction: The feasibility of using a near-field array for electromagnetic susceptibility testing is studied. The basic objective is to control the element weightings such that a plane wave is generated within the test volume. The basic theory is developed for arbitrary array geometries, and numerical results are obtained for finite planar arrays. A general near-field array synthesis technique is developed, and the technique minimizes the mean square error in the test volume while constraining the array excitations. The constraint prevents large excitations and is useful in minimizing the fields outside the test volume. The basic idea looks promising, but some practical considerations, such as bandwidth and angular scanning limitations, require further theoretical and experimental investigation.
Date:
February 1984
Creator:
Hill, D. A.
Object Type:
Report
System:
The UNT Digital Library
A Near-Field Array of Yagi-Uda Antennas for Electromagnetic Susceptibility Testing
Abstract: In electromagnetic susceptibility testing of electronic equipment, the ideal incident field is a plane wave. To approximate this condition, a seven-element array of Yagi-Uda antennas has been constructed and tested at a frequency of 500 MHz. The element weightings are determined by a near-field synthesis technique which optimizes the uniformity of the field throughout a rectangular test volume in the near field of the array. The amplitude and phase of the electric field have been measured throughout the test volume with a short dipole probe, and the agreement with the theory is excellent.
Date:
June 1985
Creator:
Hill, David A. & Koepke, Galen H.
Object Type:
Report
System:
The UNT Digital Library
Performance of the Norris Cotton Federal Office Building for the First 3 Years of Operation
Report issued by the National Bureau of Standards over use of the Norris Cotton Federal Building. The report focuses on the energy conservation features of the building. This report includes tables, illustrations, and photographs.
Date:
August 1981
Creator:
Hill, James Edward; May, William B., Jr.; Richtmyer, Thomas E.; Elder, Jacqueline; Tibbott, Robert L.; Yonemura, Gary T. et al.
Object Type:
Report
System:
The UNT Digital Library
Tables of Einstein Functions: Vibrational Contributions to the Thermodynamic Functions
From Introduction: "The recent acceptance by physicists and chemists of new values for the fundamental constants and the continued demand for expanded and convenient tables prompted the recomputation and preparation of this volume. The authors have tried to incorporate this work a number of the more desirable features of the above-cited works, particularly with respect to their use in calculations involving: Thermodynamic properties of gases; specific heats, electrical and thermal conductivity of solids; and molecular structure and spectroscopy of diatomic and polyatomic molecules. It is the hope of the authors that formal character of this publication will insure a more adequate notice and dissemination than was accorded the earlier works, thereaby reducing the probability of still further duplication of effort."
Date:
July 12, 1962
Creator:
Hilsenrath, Joseph & Ziegler, Guy G.
Object Type:
Report
System:
The UNT Digital Library
European Footwear Sizes
Description of the differences in European shoe sizes in comparison to American shoe sizes.
Date:
1948
Creator:
Hobbs, Robert B.
Object Type:
Report
System:
The UNT Digital Library
Charts of Compressibility Factors and Charts Showing Quantities Delivered by Commercial Cylinders for Hydrogen, Nitrogen, and Oxygen
Two charts are given for each of the gases hydrogen, nitrogen, and oxygen. The first gives directly the number of standard cubic feet of the gas which a cylinder will deliver. The second chart gives values of the compressibility factor and of the density.
Date:
November 17, 1948
Creator:
Hoge, Harold J.; Meyers, Cyril H. & McCoskey, Robert E.
Object Type:
Report
System:
The UNT Digital Library
Endurance Tests of Tires
Technical paper issued by the Bureau of Standards over studies conducted on the endurance of tires. 230 tires of 36 different brands were tested during the studies. The results of the studies are presented and discussed. This paper includes tables, and photographs.
Date:
May 25, 1926
Creator:
Holt, W. L. & Wormeley, P. L.
Object Type:
Report
System:
The UNT Digital Library
Publications Received in the Library of the National Bureau of Standards, July 1962
Report providing an alphabetical listing of the periodicals, both American and foreign, that are currently being received in the Washington (D.C.) Library of the National Bureau of Standards. Approximately 2,000 titles are cited, together with call numbers indicating the location of each in the NBS Washington Library. Although this information was compiled primarily for the use of the Bureau's scientific staff, it is also of value to libraries, scientific and technical organizations, and research workers.
Date:
November 23, 1962
Creator:
Hopper, Natalie J.
Object Type:
Report
System:
The UNT Digital Library
Selected Properties of Hydrogen (Engineering Design Data)
Report issued by the Bureau of Standards over the thermophysical properties of hydrogen. Properties of hydrogen in varying states (gaseous, liquid, solid, etc.) are presented and discussed. This report includes tables, and illustrations.
Date:
February 1981
Creator:
Hord, J.; McCarty, Robert D. & Roder, H. M.
Object Type:
Report
System:
The UNT Digital Library
Hydrogenation of Ethylene on Metallic Catalysts
Catalyzed hydrogenation in the presence of unsupported catalysts, especially of evaporated films of pure metals is discussed.
Date:
1968
Creator:
Horiuti, Juro & Miyahara, Koshiro
Object Type:
Report
System:
The UNT Digital Library
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.
Date:
June 1970
Creator:
Hougen, Jon T.
Object Type:
Report
System:
The UNT Digital Library
Shielding Against Gamma Rays, Neutrons, and Electrons From Nuclear Weapons: A Review and Bibliography
Report discussing the problem of predicting dose rates and of estimating the effectiveness of shielding from radiations resulting from nuclear explosions. A number of calculations and supporting experiments regarding the penetration and diffusion of gamma rays, neutrons, and electrons through air and bulk materials are summarized. Indications are given of gaps in such input information. A selection of 485 references from the unclassified literature is presented, of which 388 are cataloged as to source geometry and energy, absorber material and configuration, type of data presented, and method of calculation or experimental technique. These cataloged references include radiation field studies ranging from the point-source infinite-medium situation up through such complicated geometries as foxholes, shelters, and conventional structures. The other references are of a general or review nature or contain input spectral data.
Date:
February 24, 1964
Creator:
Hubbell, J. H. & Spencer, L. V.
Object Type:
Report
System:
The UNT Digital Library
Testing of Metal Volumetric Standards
From Purpose: "The specifications and tolerances contained in this Monograph should be of assistance to purchasers of metal capacity standards. The information on methods of calibration and use of these measures should prove valuable to weights and measures officials and those persons in industry who are concerned with measurements of volumes of fluids."
Date:
April 1, 1963
Creator:
Hughes, J. C. & Keysar, B. C.
Object Type:
Report
System:
The UNT Digital Library
The Strength of Reinforced Concrete Beams; Results of Tests of 333 Beams (First Series)
Report issued by the Bureau of Standards discussing studies conducted on reinforced concrete beams. The strength and behavior of reinforced beams at different time intervals is presented.
Date:
1912
Creator:
Humphrey, Richard L. & Losse, Louis H.
Object Type:
Report
System:
The UNT Digital Library