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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 Calculation of Rotational Energy Levels and Rotational Line Intensities in Diatomic Molecules

The Calculation of Rotational Energy Levels and Rotational Line Intensities in Diatomic Molecules

Date: June 1970
Creator: Hougen, Jon T.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Calculation of Sunrise and Sunset Times at Ionospheric Heights Along a Great Circle Path

Calculation of Sunrise and Sunset Times at Ionospheric Heights Along a Great Circle Path

Date: November 8, 1964
Creator: Brady, A. H.
Description: Formulas, computer program, and illustrations for a great circle path at ionospheric heights.
Contributing Partner: UNT Libraries Government Documents Department
Calibration of Line Standards of Length and Measuring Tapes at the National Bureau of Standards

Calibration of Line Standards of Length and Measuring Tapes at the National Bureau of Standards

Date: May 20, 1960
Creator: Judson, Lewis V.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Calibration of Liquid-in-Glass Thermometers

Calibration of Liquid-in-Glass Thermometers

Date: February 12, 1965
Creator: Swindells, James F.
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.
Contributing Partner: UNT Libraries Government Documents Department
Calibration of Temperature Measurement Systems Installed in Buildings

Calibration of Temperature Measurement Systems Installed in Buildings

Date: January 1984
Creator: Hurley, C. Warren & Schooley, James F.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Calibration Procedures for Direct-Current Resistance Apparatus

Calibration Procedures for Direct-Current Resistance Apparatus

Date: March 1, 1962
Creator: Brooks, Paul P. B.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
A Calibration Service for 30 MHz Attenuation and Phase Shift

A Calibration Service for 30 MHz Attenuation and Phase Shift

Date: May 1988
Creator: Adair, Robert T.
Description: Definitions, capabilities of the calibration system and techniques of calibration are presented.
Contributing Partner: UNT Libraries Government Documents Department
Capacities of Stacks in Sanitary Drainage Systems for Buildings

Capacities of Stacks in Sanitary Drainage Systems for Buildings

Date: July 3, 1961
Creator: Wyly, Robert S. & Eaton, Herbert N.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Catenary Chart 3

Catenary Chart 3

Date: August 7, 1944
Creator: United States. National Bureau of Standards.
Description: Chart of catenary curve ordinates: "The curve gives approximate values of sag at all points on the catenary curve expressed in per cent of the center sag. The error is negligible for all spans in which the center sag is less than 10% of the span length." It is enlarged from figures in NBS discussion of national electrical safety code (handbook H39).
Contributing Partner: UNT Libraries Government Documents Department
Causes of Variation in Chemical Analyses and Physical Tests of Portland Cement

Causes of Variation in Chemical Analyses and Physical Tests of Portland Cement

Date: April 27, 1961
Creator: Bean, B. Leonard & Dise, John R.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department