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A Spectrophotometric Atlas of the Spectrum of CH from 3000A to 5000A

Description: Report of the near ultraviolet and visible emission spectrum of CH presented in the form of a spectrophotometric atlas. The spectrum was recorded photoelectrically from an acetylene-oxygen flame in the region 4900 to 3000 A by use of a high-resolution grating monochromator. Each of the lines in the CH spectrum is identified.
Date: February 14, 1961
Creator: Bass, Arnold M. & Broida, H. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Measurement Assurance for Gage Blocks

Description: Report discussing the philosophy of measurement assurance and the three levels of measurement assurance programs. The measurement assurance programs are outlined to show how control over the measurement process can be maintained and how the offset (or systematic error) from the unit of length maintained by the National Bureau of Standards ban be made negligible. This monograph is intended for those who need to know on a continuing basis the uncertainty of their gage block calibration procedure.
Date: February 1979
Creator: Croarkin, Carroll; Beers, John & Tucker, Clyde
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Error Analysis for the Use of Presently Available Lunar Radio Flux Data in Broadbeam Antenna-System Measurements

Description: From introduction: Simple, precise expressions for lunar diameter, average brightness temperature, flux density, and shape factor are presented. An analysis of the relationship between these parameters and corresponding errors are included. For broadbeam (HPBW>d) antennas, results show that flux density and shape factor can be determined with errors less than 13 percent and 0.4 percent respectively at frequencies below 10 GHz. Extension of the analysis to higher frequencies is indicated.
Date: February 1984
Creator: Daywitt, William C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Construction of a Large Transverse Electromagnetic Cell

Description: Report issued by the U.S. National Bureau of Standards discussing the construction of large electromagnetic cells. As stated in the introduction, "this instruction provides information and procedures necessary to fabricate a large transverse electromagnetic (TEM) cell to be used for experimental "electromagnetic interference" (EMI) evaluation studies" (p. 1). This report includes illustrations, and photographs.
Date: February 1979
Creator: Decker, W. F. & Wilson, W. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analytical and Experimental Analysis of Procedures for Testing Solar Domestic Hot Water Systems

Description: 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.
Date: February 1982
Creator: Fanney, A. H.; Thomas, W. C.; Scarbrough, C. A. & Terlizzi, C. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Investigation of Fundamental Interactions with Cold Neutrons

Description: Abstract: The National Bureau of Standards is establishing a National Cold Neutron Facility at its 20 MW reactor located in Gaithersburg, Maryland. In order to provide guidance in the development of research plans for the Facility, the Department of Energy and NBS sponsored, on November 14-15, 1985, a workshop on the Investigation of Fundamental Interactions with Cold Neutrons. The 25 papers presented at the workshop are printed in the proceedings.
Date: February 1986
Creator: Greene, G. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Theory of Near-Field Phased Arrays for Electromagnetic Susceptibility Testing

Description: 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 const… more
Date: February 1984
Creator: Hill, D. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Selected Properties of Hydrogen (Engineering Design Data)

Description: 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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Shielding Against Gamma Rays, Neutrons, and Electrons From Nuclear Weapons: A Review and Bibliography

Description: 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… more
Date: February 24, 1964
Creator: Hubbell, J. H. & Spencer, L. V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Standard X-ray Diffraction Powder Patterns: Section 12. Data for 57 Substances

Description: 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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Theory of Mutual Impedances and Multiple Reflections in an N-Element Array Environment

Description: Abstract: A general theoretical approach is formulated to describe the complex electromagnetic environment of an N-element array. The theory reveals the element-to-element interactions and multiple reflections within the array. From the formulation, it is found that the interaction between an excited element and an open-circuited element can be viewed as the sum of terms describing all possible signal paths within the array environment which start from the radiating element and terminate on the… more
Date: February 1985
Creator: Muth, Lorant A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Directory of Accredited Laboratories: 1984

Description: Abstract: Laboratories accredited by the National Voluntary Laboratory Accreditation Program (NVLAP) are identified along with the specific test methods for which they are accredited. The current status of existing accreditation programs is given for laboratories that test thermal insulation, freshly mixed concrete, carpet, wood burning stoves, paint, and personnel radiation dosimeters, and that provide acoustical testing services. Indexes are provided for searching the Directory for laboratori… more
Date: February 1985
Creator: NVLAP (Program : U.S.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Atomic Energy Levels in Crystals

Description: 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… more
Date: February 24, 1961
Creator: Prather, John L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A New Interferential Dilatometer

Description: 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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Automatic Indexing: A State-of-the-Art Report

Description: 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… more
Date: February 1970
Creator: Stevens, Mary Elizabeth
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Application of Method of Characteristics to Model the Transport of Discrete Solids in Partially-Filled Pipe Flow

Description: 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.
Date: February 1982
Creator: Swaffield, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Standard X-ray Diffraction Powder Patterns: Section 11. Data for 70 Substances

Description: 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
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Calibration of Liquid-in-Glass Thermometers

Description: 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.
Date: February 12, 1965
Creator: Swindells, James F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

America Joins a Metric World

Description: 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.
Item Type: Refine your search to only Pamphlet
Partner: UNT Libraries Government Documents Department
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