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Microwave Impedance Measurements and Standards

Description: Report presenting a survey and discussion of well-known microwave impedance measurement techniques. The discussion includes an introduction which emphasizes basic concepts and reflection coefficient-voltage standing-wave ratio relationships. Sources of error in the various measurement techniques are discussed and methods to reduce errors are presented. Methods using rotating loops and resonance lines are included and a brief discussion of microwave impedance standards is given.
Date: August 12, 1965
Creator: Beatty, Robert W.
Partner: UNT Libraries Government Documents Department
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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.
Partner: UNT Libraries Government Documents Department
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Tables of Einstein Functions: Vibrational Contributions to the Thermodynamic Functions

Description: 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 … more
Date: July 12, 1962
Creator: Hilsenrath, Joseph & Ziegler, Guy G.
Partner: UNT Libraries Government Documents Department
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Fire Tests of Precast Cellular Concrete Floors and Roofs

Description: From Abstract: "The results of an investigation of lightweight, precast cellular concrete planks are given. Fire tests were made of two floor and five roof specimens made up of these planks. Variables, included density of the cellular concrete, thickness and span of the planks, reinforcement, and cover for the latter."
Date: April 12, 1962
Creator: Ryan, J. V. & Bender, E. W.
Partner: UNT Libraries Government Documents Department
open access

Methods for the Dynamic Calibration of Pressure Transducers

Description: From Introduction Statement of Objectives: "The purpose of this publication is to provide assistance to the practicing engineer who is faced with the problem of making dynamic measurements of rapidly changing pressures."
Date: December 12, 1963
Creator: Schweppe, J. L.; Eichberger, L. C.; Muster, D. F.; Michaels, E. L. & Paskusz, G. F.
Partner: UNT Libraries Government Documents Department
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