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- Argon<br />Atomic structure<br />Intermolecular forces<br />Mercury (1)
- Electromagnetic waves -- Transmission<br />Wave guides -- Design (1)
- Lattice dynamics<br />Specific heat -- Measurement (1)
- Lattice dynamics<br />Specific heat<br />Thermodynamics -- Mathematical models (1)
- Potassium chloride<br />Solids -- Electric properties (1)
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Articles 1 - 13 of 13
Full-Text Articles in Physics
United States Patent: Antenna Guy Fitting, Robert Katz
United States Patent: Antenna Guy Fitting, Robert Katz
Robert Katz Publications
The invention to be hereinafter described relates to coupling devices for the attaching of fixed wire antenna to aircraft.
Heretofore, it has been the general practice to make connections between the fixed wire antenna and aircraft by wrapping the antenna wire about a thimble or like device, as in making a splice.
This practice resulted in a number of sharp points and rough surfaces whose susceptibility to corona discharge is well known. This corona discharge resulted in bad weather extremely difficult or dangerous due to interruption of radio navigation and communication services.
The present invention is designed to overcome the …
Application Of X-Ray Technique To The Detection Of Internal Insect Infestation Of Grain, Max Milner, Milford R. Lee, Robert Katz
Application Of X-Ray Technique To The Detection Of Internal Insect Infestation Of Grain, Max Milner, Milford R. Lee, Robert Katz
Robert Katz Publications
During the course of a comprehensive investigation of methods for the determination of internal insect infestation in commercial wheat, radiographic techniques have been developed at this station which provide satisfactory delineation of internal infestation. We have applied these techniques to the observation of the growth of such insects as granary weevil, Sitophilus granaries L., and rice weevil, Sitophilus oryza L., from the hatching of the egg within the kernel through larval and pupal growth to emergence as a mature insect. Although considerable detail is always lost in the reproduction of radiographs during engraving and printing, the accompanying figures (1, …
A Simple Experiment On Heat, Robert Katz
A Simple Experiment On Heat, Robert Katz
Robert Katz Publications
This experiment requires apparatus consisting of two ring stands, two bunsen burners, safety matches, a sheet of hard asbestos board and a sheet of aluminum of approximately the same dimensions (6 in. long by 3½ in. wide by ⅛ in. thick). The ring stands are set side-by-side with the sheet of aluminum on one and the sheet of asbestos on the other. Two matches are placed on each sheet; one in the middle directly above the bunsen burner and one on the edge, two or three inches away. In what order will the matches catch fire after the burners are …
A Study Of An Inverse Feed-Back, Low Frequency, Low-Pass Filter, Ralph A. Nobles
A Study Of An Inverse Feed-Back, Low Frequency, Low-Pass Filter, Ralph A. Nobles
Physics & Astronomy ETDs
In connection with other research work in the physics department at the University of New Mexico it became of interest to make a detailed study of a resistance-capacitance couples low-pass filter which incorporate inverse feed-back. In order to determine the effect of the inverse feed-back on the filters, calculations are made on circuits with and without feed-back. Response curves are calculated for step-wave inputs and for sine-wave inputs, and these calculated curves then compared with experimental response curves.
A New Method Of Detecting Low Intensity Nuclear Radiation, Emerson Jones
A New Method Of Detecting Low Intensity Nuclear Radiation, Emerson Jones
Physics & Astronomy ETDs
In general there exist in the energy level scheme of many of the elements, transitions which give rise to the liberation of energy in the visible or near visible spectra. This situation gave rise to the hope that a gaseous element could be selected such that upon being excited or ionized by charged particle radiation, the predominant transitions to lower energy levels could be detected by photographic means. If a means of detecting these transitions could be made sufficiently sensitive, one could then hope to detect very low radiation intensities of charged particles. The problem consisted of evacuating a chamber, …
Disintegration Of Te121 And Te123 Isomers, Robert Katz, R. D. Hill, M. Goldhaber
Disintegration Of Te121 And Te123 Isomers, Robert Katz, R. D. Hill, M. Goldhaber
Robert Katz Publications
Line intensities in the conversion electron spectra of Te121 and Te123 were evaluated in a variable field, 180° focusing beta-ray spectrograph. Electron-electron coincidences were obtained between the transition pairs 82-213 kev in Te121 and 88.5-159 kev in Te123. Decay schemes for the two isomers are shown.
A Grazing Incidence Vacuum Grating Spectrograph For Far Ultra Violet Spectroscopy, Lawrey Huber Chapin
A Grazing Incidence Vacuum Grating Spectrograph For Far Ultra Violet Spectroscopy, Lawrey Huber Chapin
Masters Theses
"Spectroscopy, in the region of the far ultraviolet from 100 Angstroms to 1000 Angstroms, requires special equipment and techniques, inasmuch as these wavelengths are highly absorbed by air. Many gases have resonant frequencies corresponding to the wavelengths mentioned and hence absorption bands appear in the spectrograms obtained by using spectrographs for the visible region. One solution of the problem of obtaining data in this region is to construct a spectrograph from which all intervening gas molecules have been removed, thus eliminating the absorbing material. A vacuum of 10⁻⁴ mm. of mercury is necessary to reduce the absorption to a value …
The Reflection Coefficient At The Truncated Corner Of A Rectangular Wave Guide, John Raymond Barcroft
The Reflection Coefficient At The Truncated Corner Of A Rectangular Wave Guide, John Raymond Barcroft
Masters Theses
"The term wave guide refers to a hollow conducting tube (usually of rectangular or circular cross section) filled with a dielectric (or vacuum) and used for the transmission of electromagnetic waves. We shall consider the guide to be bounded by a perfect conductor and to be filled with a lossless homogeneous isotropic dielectric (or vacuum). The electromagnetic wave in the guide must of course satisfy Maxwell's equation. It must also satisfy the boundary condition that there be no tangential component of electric field at the surface of the conductor. If the electromagnetic waves traveling along the guide meet a discontinuity …
The Theory Of The Specific Heat Of A Face-Centered Cubic Lattice, Charles Robert Bonnell
The Theory Of The Specific Heat Of A Face-Centered Cubic Lattice, Charles Robert Bonnell
Masters Theses
"It is generally accepted that a normal crystalline solid can be pictured at absolute zero as an assembly of atoms at rest arranged at periodic lattice points. Since at higher temperatures each molecule becomes a harmonic oscillator about its lattice point, it is necessary to know the distribution of normal modes of vibration in order to calculate the thermodynamic properties of the lattice...Many approaches have been made to get a simple solution of the problem, but either accuracy is sacrificed for simplicity, or the solutions demand a very considerable amount of labor. The classical theories failed to explain the change …
Intermolecular Potential Functions For Liquid Argon And Liquid Mercury, Richard H. Kerr
Intermolecular Potential Functions For Liquid Argon And Liquid Mercury, Richard H. Kerr
Masters Theses
"The purpose of this research is to obtain such intermolecular potential functions for liquid argon and liquid mercury by use of the experimental radial density functions available for these two liquids over a wide range of temperatures. We shall introduce the notion of a correlation between the motions of atoms in neighboring cells in a cell theory of liquid structure, and derive a theoretical radial density function involving the intermolecular potential function for a pair of atoms in the liquid. This radial density function, or as it is frequently termed, the atomic distribution function, applied to the experimental data should …
A Determination Of The Surface Tension Of Bismuth, Cadmium, Tin, And Lead, Edward Mckee Chandler
A Determination Of The Surface Tension Of Bismuth, Cadmium, Tin, And Lead, Edward Mckee Chandler
Masters Theses
"Various methods have been employed for the determination of surface tension including capillary rise, drop weight, maximum bubble pressure, sessile drops on flat surfaces, sessile bubbles formed underneath flat surfaces, and the shape of pendent drops. Each method is subject to characteristic advantages and disadvantages. Only two of these will be discussed. The method of maximum bubble pressure allows the formation of a fresh surface for every bubble but does not permit the study of a given sample over a period of time. The sessile drop in direct contrast, allows the observation of the same sample over any period of …
The Energy Levels Of Potassium Chloride, Clifford L. Adams
The Energy Levels Of Potassium Chloride, Clifford L. Adams
Masters Theses
"An understanding of the electronic energy states of solids has long been considered of importance. And the energy levels of the alkali halides have been the subject of much study in recent years. The present work is an attempt to set up an energy-level diagram for potassium chloride"--Introduction, page 1.
The Theory Of The Specific Heat Of A Body Centered Cubic Lattice, Curtis Cleveland Webster
The Theory Of The Specific Heat Of A Body Centered Cubic Lattice, Curtis Cleveland Webster
Masters Theses
"In normal crystalline solids the atoms are at rest in their lattice points at absolute zero of temperature. Increasing the temperature of the crystal increases the motion of the atoms about their lattice points. Approximately, each atom or ion may be treated as a harmonic oscillator. then from the equations of motion of the atoms, by the Born-von Karman theory of specific heats, the normal modes of vibration of the lattice can be expressed as the roots of a secular determinant. Application of this theory to determine the thermodynamic properties of crystals has resulted either in solutions that are inaccurate …