Open Access. Powered by Scholars. Published by Universities.®
![Digital Commons Network](http://assets.bepress.com/20200205/img/dcn/DCsunburst.png)
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (18)
- Missouri University of Science and Technology (14)
- Portland State University (7)
- Utah State University (7)
- California Polytechnic State University, San Luis Obispo (6)
-
- Bryn Mawr College (3)
- Old Dominion University (3)
- Wright State University (3)
- Cleveland State University (2)
- Columbia College Chicago (2)
- University of Massachusetts Amherst (2)
- University of Miami (2)
- Wayne State University (2)
- Western Michigan University (2)
- William & Mary (2)
- Chapman University (1)
- College of Saint Benedict and Saint John's University (1)
- Gettysburg College (1)
- Iowa State University (1)
- Loyola Marymount University and Loyola Law School (1)
- Sacred Heart University (1)
- University of Denver (1)
- University of Montana (1)
- University of Nevada, Las Vegas (1)
- University of New Orleans (1)
- University of the Pacific (1)
- Western Kentucky University (1)
- Keyword
-
- Deformation Density (2)
- Dielectrics (2)
- Electrojet (2)
- Electron-Density (2)
- Equator (2)
-
- Fluid dynamics (2)
- Ionosphere (2)
- Sound--Measurement (2)
- Special relativity (Physics) (2)
- Spectra (2)
- Thermodynamics (2)
- Absorption zone (1)
- Activation energies (1)
- Air -- Analysis (1)
- Alpha rays (1)
- Angle (1)
- Atomic processes (1)
- Audio frequency (1)
- Auditory perception (1)
- Beer's Law (1)
- Bible (1)
- Bond formation (1)
- Burroughs computers (1)
- Cast materials (1)
- Chatanika (1)
- Chemical kinetics (1)
- Climate (1)
- Comparison (1)
- Computer program language (1)
- Computer programs (1)
- Publication
-
- Physics Faculty Research & Creative Works (12)
- Physics (6)
- Physics Faculty Publications (6)
- Anthony F. Starace Publications (5)
- Bela G. Fejer (4)
-
- Physics Faculty Publications and Presentations (4)
- All Physics Faculty Publications (3)
- Edward Schmidt Publications (3)
- Gordon Gallup Publications (3)
- Physics Faculty Research and Scholarship (3)
- Dissertations and Theses (2)
- Dissertations, Theses, and Masters Projects (2)
- John R. Hardy Papers (2)
- Masters Theses (2)
- Physics Articles and Papers (2)
- Physics Theses & Dissertations (2)
- Physics and Astronomy Faculty Research Publications (2)
- Robert Hallock (2)
- Robert Katz Publications (2)
- Unpublished Writings (2)
- Alexander H. King (1)
- Chemistry Faculty Publications and Presentations (1)
- Chemistry and Biochemistry Faculty Publications (1)
- Electrical Engineering Faculty Publications (1)
- M. Eugene Rudd Publications (1)
- Masters Theses & Specialist Projects (1)
- Materials Science and Engineering Faculty Research & Creative Works (1)
- Mathematics, Physics, and Computer Science Faculty Articles and Research (1)
- Mechanical & Aerospace Engineering Faculty Publications (1)
- Miron Kaufman (1)
- Publication Type
Articles 61 - 87 of 87
Full-Text Articles in Physical Sciences and Mathematics
Untitled (Subject: Energy), Richard C. Heyser
Untitled (Subject: Energy), Richard C. Heyser
Unpublished Writings
Fundamental energy relations are explored as a basis for the measurement of physical systems. By considering finite dimensional observations in linear Hilbert space it is shown that a necessary and sufficient condition for the conservation of energy is the partitioning of any observation of that energy into two components which will be related through the Hilbert transform. The consequence of this relationship is demonstrated for the equilibrium storage of energy, point-wave duality in measurements, significance of complex representations involving circular form, the meaning of minimum phase and all-pass properties, and the introduction of new measurement characterizations such as the energy-time …
The Two Parts Of Energy, Richard C. Heyser
The Two Parts Of Energy, Richard C. Heyser
Unpublished Writings
In this paper, Richard C. Heyser explains the theories behind measuring sound by discussing its energy. Using what he calls abstract geometry, Heyser argues that measuring the transfer properties (that is, pressure and velocity) of sound's energy aids in the discovery of its amplitude and phase (or in-phase and quadrature).
Type I Radar Echoes From Theequatorial Electrojet With Double Peaked Doppler Spectra, Bela G. Fejer, D. T. Farley, P. Johnston, B. B. Balsley
Type I Radar Echoes From Theequatorial Electrojet With Double Peaked Doppler Spectra, Bela G. Fejer, D. T. Farley, P. Johnston, B. B. Balsley
Bela G. Fejer
Normal type 1 radar echoes obtained from relatively large zenith angles have a power spectrum with a single narrow peak whose Doppler shift corresponds approximately to the acoustic velocity in the medium. On some occasions, however, this single maximum splits into two distinct peaks, separated in phase velocity on one occasion by 270 m/s. This bifurcation is most easily observed at large zenith angles during daytime when a narrow antenna beam is used. It has also been seen in a daytime experiment in which radars at Jicamarca and Huancayo simultaneously probed the same region from two different radar zenith angles. …
Continental Drift, Tectonics, And Joshua, Joel W. Block
Continental Drift, Tectonics, And Joshua, Joel W. Block
Physics Faculty Publications
The Bible has served as a source of spiritual inspiration for many centuries. It has been used as a text in the academic disciplines of history, geography, archeology, literature, law, language, and health, as well as in theology. Yet this multipurpose manuscript has been virtually ignored as an earth science reference It is this writer's intent to demonstrate the Bible's value as a geological resource.
Design And Use Of A Computerized Test Generating Program, Edward Schaefer, Laurence A. Marschall
Design And Use Of A Computerized Test Generating Program, Edward Schaefer, Laurence A. Marschall
Physics and Astronomy Faculty Publications
An easy-to-use set of programs for the computerized generation of multiple-choice and easy examinations in an introductory astronomy course is described. The programs allow the user to establish files of test questions and to rapidly assemble printed copies of examinations suitable for photocopying. Written in ALGOL for a Burroughs B6700 computer, the programs can, in principle, be implemented on large mainframe computers or on microcomputers of a size increasingly available to physics departments. The advantages and costs of computerized test generation are discussed.
Characterization Of Phase Transitions In Vanadium Deuterides, R. L. Tober, Gust Bambakidis
Characterization Of Phase Transitions In Vanadium Deuterides, R. L. Tober, Gust Bambakidis
Physics Faculty Publications
No abstract provided.
Theoretical Lattice-Dynamical Studies Of The Incommensurate Phase Transformation In K2Seo4, M. S. Haque, John R. Hardy
Theoretical Lattice-Dynamical Studies Of The Incommensurate Phase Transformation In K2Seo4, M. S. Haque, John R. Hardy
John R. Hardy Papers
We have made detailed lattice-dynamical studies of the origin of the incommensurate phase transition in potassium selenate. These were based on a rigid-ion model with Coulomb interactions, and also short-range interactions between restricted numbers of close neighbors. The associated short-range force constants were determined using the static equilibrium conditions for the crystal and the observed Raman frequencies. The calculations were made for the room temperature structure using the quasiharmonic approximation in which the effects of varying temperature were simulated by varying the short-range force constants. In this way we were able to show that the crystal has a low-frequency optic …
Four-Color And Hβ Photometry Of Stars In The Galactic Cluster Ngc 129, Edward G. Schmidt
Four-Color And Hβ Photometry Of Stars In The Galactic Cluster Ngc 129, Edward G. Schmidt
Edward Schmidt Publications
Four-color and photometry has been obtained for 22 stars in the field of the open cluster NGC 129. Based on this photometry, the membership of these stars in the cluster is discussed and it is found that many are field stars. The color excesses for cluster members obtained here range from E(b – y) = 0.207 to 0.513 and are larger than those found from previous UBV photometry. It has been suggested that this cluster contains a nonvariable Cepheid strip star. However, the present reddening places this star at the edge of the instability strip. A true …
Angular And Energy Distribution Of Electrons From 15- To 150-Kev H0+He Collisions, M. Eugene Rudd, J. S. Risley, J. Fryar, R. G. Rolfes
Angular And Energy Distribution Of Electrons From 15- To 150-Kev H0+He Collisions, M. Eugene Rudd, J. S. Risley, J. Fryar, R. G. Rolfes
M. Eugene Rudd Publications
An electrostatic analyzer positioned at various angles has been used to measure absolute values of cross sections for electron production in collisions of neutral hydrogen atoms with helium as a function of the angle and energy of the ejected electrons. These cross sections are compared with corresponding ones for proton and electron impact to infer the mechanisms of electron production. A prominent peak in the energy distribution due to electron loss from the projectile occurs at an electron velocity equal to that of the projectile. At very low electron energies the similarity of the energy distribution to that due to …
The Cepheid Luminosity Scale, Edward G. Schmidt
The Cepheid Luminosity Scale, Edward G. Schmidt
Edward Schmidt Publications
The distance moduli of galactic clusters containing classical Cepheids are being redetermined using the four-color and Hβ photometric system. The results for four clusters are presented here and it is found that the distance moduli are smaller than previous values. Possible reasons for this discrepancy are discussed.
A Graphical Method For Calculating First Order Transition Matrices For Open-Shell Atoms In The Random Phase Approximation, Anthony F. Starace, Siamak Shahabi
A Graphical Method For Calculating First Order Transition Matrices For Open-Shell Atoms In The Random Phase Approximation, Anthony F. Starace, Siamak Shahabi
Anthony F. Starace Publications
A graphical procedure is presented for calculating first order transition matrices for a general (open-shell) atom. The first order transition matrix may be used to calculate matrix elements of a general one-body operator of rank λ in orbital space and σ in spin space. In the random phase approximation we obtain a set of N + N′ coupled differential equations for N final state radial functions and N′ initial state radial functions which completely determine the first order transition matrix for an atomic system having N final state channels. (The relation of N′ to N is dependent on the atomic …
Hall-Coefficient And Resistivity At High Pressure In 1t-Tas2, Paul D. Hambourger, F. J. Disalvo
Hall-Coefficient And Resistivity At High Pressure In 1t-Tas2, Paul D. Hambourger, F. J. Disalvo
Physics Faculty Publications
No abstract provided.
Determiningeons : A Computer Program For Approximating Lie Generators Admitted By Dynamical Systems, Gregory G. Nagao
Determiningeons : A Computer Program For Approximating Lie Generators Admitted By Dynamical Systems, Gregory G. Nagao
University of the Pacific Theses and Dissertations
As was recognized by same of the most reputable physicists of the world such as Galilee and Einstein, the basic laws of physics must inevitably be founded upon invariance principles. Galilean and special relativity stand as historical landmarks that emphasize this message. It's no wonder that the great developments of modern physics (such as those in elementary particle physics) have been keyed upon this concept.
The modern formulation of classical mechanics (see Abraham and Marsden [1]) is based upon "qualitative" or geometric analysis. This is primarily due to the works of Poincare. Poincare showed the value of such geometric analysis …
Plasma Line Measurements At Chatanika With High-Speed Correlator And Filter Bank, W. Kofman, Vincent B. Wickwar
Plasma Line Measurements At Chatanika With High-Speed Correlator And Filter Bank, W. Kofman, Vincent B. Wickwar
All Physics Faculty Publications
In the spring and fall of 1978 we made an extensive series of plasma line and correlative observations with the Chatanika incoherent scatter radar. To make these measurements, we greatly modified the radar receiving system. In addition to enlarging the plasma line filter bank the most significant change was the incorporation of a high-speed correlator provided by the French. This was the first use of a correlator in a monostatic radar to obtain the intensity spectra of naturally occurring plasma lines. In this paper we develop the signal-processing theory that we use to obtain the plasma line intensities from these …
High-Latitude Convection: Comparison Of A Simple Model With Incoherent Scatter Observations, Jan Josef Sojka, J. C. Foster, W. J. Raitt, Robert W. Schunk, J. R. Doupnik
High-Latitude Convection: Comparison Of A Simple Model With Incoherent Scatter Observations, Jan Josef Sojka, J. C. Foster, W. J. Raitt, Robert W. Schunk, J. R. Doupnik
All Physics Faculty Publications
We have compared a simple model of plasma convection at high latitudes with data obtained from simultaneous measurements made by the incoherent scatter facilities at Chatanika, Alaska and Millstone Hill, Massachusetts in June 1978 during moderately disturbed conditions. The measured horizontal plasma drift velocities were averaged for four days to emphasize gross features of the convection pattern and reduce the effects of substorms. The convection model includes the offset of 11.5° between the geographic and geomagnetic poles, the tendency of plasma to corotate about the geographic pole, and a constant dawn/dusk magnetospheric electric field mapped to a circle about a …
A Comparison Of Model Predictions For Plasma Convection In The Northern And Southern Polar Regions, Jan Josef Sojka, W. J. Raitt, Robert W. Schunk
A Comparison Of Model Predictions For Plasma Convection In The Northern And Southern Polar Regions, Jan Josef Sojka, W. J. Raitt, Robert W. Schunk
All Physics Faculty Publications
We have presented model calculations to show how the plasma flow distributions in the northern and southern polar regions differ when viewed from a geographic inertial frame. This reference frame was selected because it is the natural frame for geophysical plasma flow measurements, there being well-known velocity corrections for either satellite or ground-based observations. Although the magnetic invariant latitude, magnetic local time reference frame is better suited to studying magnetospheric processes, a transformation from the geographic inertial frame to this magnetic frame requires both a spatial and velocity transformation, and since the latter correction has generally been neglected, we prefer …
Autooscillations And Nonlinear Anelasticity, Manfred Wuttig, Tetsuro Suzuki
Autooscillations And Nonlinear Anelasticity, Manfred Wuttig, Tetsuro Suzuki
Materials Science and Engineering Faculty Research & Creative Works
In conclusion it can be stated that a novel phenomenon, a mechanical auto oscillation, has been described theoretically and shown to exist experimentally. These auto oscillations occur when a nonlinear anelastic solid is forced into large amplitude oscillations in the vicinity of a martensitic transformation. They manifest themselves as a low frequency auto modulation of the a martensitic transformation. They manifest themselves as low frequency auto modulation of the forced vibration of such a solid. © 1980.
Improved Characterization Of Silicon-Silicon-Dioxide Interfaces, Pin Su
Improved Characterization Of Silicon-Silicon-Dioxide Interfaces, Pin Su
Dissertations, Theses, and Masters Projects
Silicon is the heart of modern semiconductor devices. The dominance of Si in semiconductor technology depends on the superior quality and properties of thermally grown SiO(,2) compared with the oxide that can be placed on any other semiconductor. For this reason, Si-SiO(,2) interface has been an interesting and important research subject for many years.;The well established quasistatic and conductance methods used in the study of the Si-SiO(,2) interface are improved by using (i) an effectively thin composite insulator, (ii) low carrier concentration substrates, and most importantly (iii) low-level illumination at a wavelength that creates electron-hole pairs. Accurate measurements of both …
Most Probable Magnetohydrostatic Equilibria For Tokamaks And Reversed Field Pinches, John Joseph Ambrosiano
Most Probable Magnetohydrostatic Equilibria For Tokamaks And Reversed Field Pinches, John Joseph Ambrosiano
Dissertations, Theses, and Masters Projects
The determination of magnetohydrostatic equilibria usually requires that two of the equilibrium functions be given. as there is usually no a priori basis for specifying the form of these two functions, the functions and the equilibria they determine may be considered random.;In this dissertation, the author reviews a recent statistical method for determining the equilibrium of an axially symmetric cylindrical plasma which is most probable (in the maximum entropy sense) given four global constraints (i.e., energy, magnetic helicity, longitudinal magnetic flux, and longitudinal current flux). Previous results from this model have been limited to non-negative random equilibrium functions (B(,z), J(,z), …
Comment On “Cancellation Of Internal Forces”, Harry A. Brown
Comment On “Cancellation Of Internal Forces”, Harry A. Brown
Physics Faculty Research & Creative Works
No abstract provided.
Total Penning Ionization Cross Sections Of Cd And Zn For He(2 ³S1) Atoms, D. W. Fahey, William F. Parks, Laird D. Schearer
Total Penning Ionization Cross Sections Of Cd And Zn For He(2 ³S1) Atoms, D. W. Fahey, William F. Parks, Laird D. Schearer
Physics Faculty Research & Creative Works
The total Penning ionization cross sections for Cd and Zn for He(2 3S1) atoms have been measured. The method used was that of Penning ion collection from a vapor cell through which a He(2 3S1) beam was passed. The beam energy was 66 meV with a velocity spread of 45%. The measured cross sections were 106(±22) and 35(±7) Å2 for the Cd and Zn targets, respectively. © 1980 American Institute of Physics.
Injection-Locked Dye Laser Pumped By A Xenon-Lon Laser, E. R. Carney, D. W. Fahey, Laird D. Schearer
Injection-Locked Dye Laser Pumped By A Xenon-Lon Laser, E. R. Carney, D. W. Fahey, Laird D. Schearer
Physics Faculty Research & Creative Works
Injection locking of a dye laser is reported for a 4-minor ring-cavity dye User pumped by a xenon-ion laser. Both a He-Ne laser and tunable CW dye laser were used as the injection sources. Copyright © 1980 by The Institute of Electrical and Electronics Engineers, Inc.
Nonequilibrium Thermodynamics Of Fuel Cells: Heat Release Mechanisms And Voltage, Gerald Wilemski
Nonequilibrium Thermodynamics Of Fuel Cells: Heat Release Mechanisms And Voltage, Gerald Wilemski
Physics Faculty Research & Creative Works
Nonequilibrium thermodynamics is used to analyze the spatial distribution of heat release mechanisms occurring in fuel cells operating under load in nonisothermal steady states. Novel contributions to heat release in the bulk electrolyte are found which are analogous to Peltier and Thomson effects in metallic conductors. Expresions for the heat release at individual electrodes are presented. An equation for the voltage of these cells is also derived. © 1980 American Institute of Physics.
More On Calculators In Beginning Physics Courses, Harry A. Brown
More On Calculators In Beginning Physics Courses, Harry A. Brown
Physics Faculty Research & Creative Works
No abstract provided.
Water And Ice Nucleation Sites From Ion Implantation Of Silicon, William H. Stlnebaugh, Don M. Sparlin, James L. Kassner
Water And Ice Nucleation Sites From Ion Implantation Of Silicon, William H. Stlnebaugh, Don M. Sparlin, James L. Kassner
Physics Faculty Research & Creative Works
Ion implantation has a substantial effect on the heterogeneous nucleation of water and ice. An enhancement of water nucleation and a suppression of ice nucleation occurred for samples of silicon implanted with ions of various species and dosage. These effects were noticeable only for samples implanted with ion doses approaching or exceeding the critical dose necessary to produce amorphous silicon. The behavior of the water droplet and ice crystal growth can be related to the amount of ion produced damage to the substrate surface. The nature of the damage can be controlled by variation of the incident ion species, dose, …
Large-Angle Electron-Photon Coincidence Experiment In Atomic Hydrogen, E. Weigold, L. Frost, K. (Kaare) J. Nygaard
Large-Angle Electron-Photon Coincidence Experiment In Atomic Hydrogen, E. Weigold, L. Frost, K. (Kaare) J. Nygaard
Physics Faculty Research & Creative Works
1s-2p excitation in hydrogen has been studied by observing the angular correlation of Lyman photons detected in coincidence with inelastically scattered electrons at 54.4 eV incident energy. The electron scattering angles ranged from 10°to 133°; the results at scattering angles larger than 20°cannot be explained by currently available theories. © 1980 The American Physical Society.
Forbidden Lines Of Np^Q Ions. I. Detailed Balance And Line Intensity Ratios, Menas Kafatos, J. P. Lynch
Forbidden Lines Of Np^Q Ions. I. Detailed Balance And Line Intensity Ratios, Menas Kafatos, J. P. Lynch
Mathematics, Physics, and Computer Science Faculty Articles and Research
Ground state forbidden transitions of np^q ions of C, N, 0, Ne, Mg, Si, S, and Fe can provide important information on the state of cosmic ionized gases. Wavelengths of these lines are in the far- and near-UV visible and near-- and far-IR regions of the spectrum. The line intensity ratios of particular transitions in q = 2, 4 ions can provide information on the temperature of the gas and in q = 3 ions information on the density of the gas. In the present work we have tabulated the line intensities of 95 transitions of these ions, which include …