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 Decade: 1960-1969
 Year: 1964
 Serial/Series Title: National Bureau of Standards Reports
 Collection: Technical Report Archive and Image Library
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
A Complete Mode Sum for LF, VLF, ELF Terrestrial Radio Wave Fields

A Complete Mode Sum for LF, VLF, ELF Terrestrial Radio Wave Fields

Date: October 1, 1964
Creator: Johler, J. Ralph & Berry, Leslie A.
Description: 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.
Contributing Partner: UNT Libraries Government Documents Department
Creep and Drying Shrinkage of Lightweight and Normal-Weight Concretes

Creep and Drying Shrinkage of Lightweight and Normal-Weight Concretes

Date: March 4, 1964
Creator: Reichard, T. W.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Curves of Input Impedance Change Due to Ground for Dipole Antennas

Curves of Input Impedance Change Due to Ground for Dipole Antennas

Date: January 31, 1964
Creator: Vogler, L. E. & Noble, J. L.
Description: Report presenting graphs of the change in input impedance of electrically short dipole antennas in the presence of an isotropic and homogeneous ground which considers four types of antennas: horizontal and vertical, electric and magnetic dipoles. Curves of the change in both the input resistance and reactance are shown for a wide range of values of the frequency, antenna height above the ground, and electromagnetic ground constants.
Contributing Partner: UNT Libraries Government Documents Department
An Engineering Method for Calculating Protection Afforded by Structures Against Fallout Radiation

An Engineering Method for Calculating Protection Afforded by Structures Against Fallout Radiation

Date: July 2, 1964
Creator: Eisenhauer, Charles
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Investigation of the Hydraulics of Horizontal Drains in Plumbing Systems

Investigation of the Hydraulics of Horizontal Drains in Plumbing Systems

Date: December 18, 1964
Creator: Wyly, Robert S.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Line Parameters and Computed Spectra for Water Vapor Bands at 2.7 mu

Line Parameters and Computed Spectra for Water Vapor Bands at 2.7 mu

Date: August 3, 1964
Creator: Gates, David M.; Calfee, Robert F.; Hansen, David W. & Benedict, W. S.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Microwave Spectral Tables: [Volume 1.] Diatomic Molecules

Microwave Spectral Tables: [Volume 1.] Diatomic Molecules

Date: December 1, 1964
Creator: Wacker, Paul F.; Mizushima, Masataka; Peterson, Jean D. & Ballard, Joe R.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
Microwave Spectral Tables: [Volume 2.] Line Strengths of Asymmetric Rotors

Microwave Spectral Tables: [Volume 2.] Line Strengths of Asymmetric Rotors

Date: December 15, 1964
Creator: Wacker, Paul F. & Pratto, Marlene R.
Description: None
Contributing Partner: UNT Libraries Government Documents Department
The NBS Standard Hygrometer

The NBS Standard Hygrometer

Date: May 1, 1964
Creator: Wexler, Arnold & Hyland, Richard W.
Description: Report describing a gravimetric hygrometer that serves as the NBS standard instrument for the measurement of the moisture content of gases on an absolute basis in terms of mixing ratio (mass water vapor/ unit mass of dry gas). The National Bureau of Standards and other laboratory reference and working instruments are compared and calibrated with this instrument. The measuring operation involves the absorption of the water vapor from a water vapor-gas mixture by a solid desiccant and the determination of the mass of this water vapor by precision weighing; it also involves the determination of the volume of the associated gas of known density by counting the fillings of two calibrated stainless steel cylinders. The construction and operation of the instrument is described. Discussions of the tests and calibrations of component parts, and of the sources of errors also are included. There is also an analysis of the random and systematic errors effecting the overall accuracy in the determination of mixing ratio.
Contributing Partner: UNT Libraries Government Documents Department
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