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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)
Articles 1 - 7 of 7
Full-Text Articles in Physics
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 …