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Articles 1  30 of 972
FullText Articles in Physical Sciences and Mathematics
Four Derivations Of Schrödinger’S Time Dependent Equation, Sydney Swanson
Four Derivations Of Schrödinger’S Time Dependent Equation, Sydney Swanson
Essential Studies UNDergraduate Showcase
Physics and the natural world have been studied by humans since the first person wondered ‘Why?’ The Schrödinger equation is important because it attempts to describe a relatively new (to us) and unfamiliar part of our universe, behavior of subatomic particles, and helps modern scientists uncover secrets that have proven useful in technology and explaining our origins. The time dependent Schrödinger equation can be derived from various starting points in Classical such as the equation of a wave, the time independent Schrödinger equation, and HamiltonJacobi equations. Why Quantum mechanics exists, useful applications, and cases when it fails or is inaccurate ...
Computational Techniques For Scattering Amplitudes, Juliano A. Everett
Computational Techniques For Scattering Amplitudes, Juliano A. Everett
Publications and Research
Scattering amplitudes in quantum field theory can be described as the probability of a scattering process to happen within a high energy particle interaction, as well as a bridge between experimental measurements and the prediction of the theory.
In this research project, we explore the Standard Model of Particle Theory, it’s representation in terms of Feynman diagrams and the algebraic formulas associated with each combination.
Using the FeynArts program as a tool for generating Feynman diagrams, we evaluate the expressions of a set of physical processes, and explain why these techniques become necessary to achieve this goal.
Indirect Imaging Using Computational Imaging Techniques, Aparna Viswanath
Indirect Imaging Using Computational Imaging Techniques, Aparna Viswanath
Electrical Engineering Theses and Dissertations
The work describes various methods employed towards solving the problem of indirect imaging. Computational techniques are employed to indirectly decipher information about an object hidden from view of a camera. Notion of virtualizing the source of illumination and detectors on real world rough surfaces was exploited to construct a non line of sight computational imager. Diversity was explored from the stand point of both illumination of the object and imaging of light reflected from the object. To understand the impact of scattering by real world rough surfaces, an instrument was developed that allows characterization of isoplanatic angle for different surface ...
Database Review: Sao/Nasa Astrophysics Data System, Laura Pope Robbins
Database Review: Sao/Nasa Astrophysics Data System, Laura Pope Robbins
Publications
Laura Pope Robbins is an advisor for The Charleston Advisor, and the review below is included in Scholarly Commons with the permission of the publisher.
The Astrophysics Data System (ADS) is the premier Open Access research database for astronomy and astrophysics containing over 13 million bibliographic records. These records include journal articles, books, conference proceedings, historical observatory bulletins, and other gray literature. An exceptional feature of ADS is the visualizations it creates, showing author networks, overlapping citations, and frequently occurring terminology giving researchers new ways to explore the literature. It is a unique resource that is as easy for a ...
Temperaments And Learning Styles Vs. Academic Performance Of FirstSemester Physics Students, Shel Randall
Temperaments And Learning Styles Vs. Academic Performance Of FirstSemester Physics Students, Shel Randall
Shel Randall
Physical Science Ii (Asu), Liqiu Zheng, Arun Saha
Physical Science Ii (Asu), Liqiu Zheng, Arun Saha
Physics and Astronomy Grants Collections
This Grants Collection for Physical Science II was created under a Round Ten ALG Textbook Transformation Grant.
Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.
Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:
 Linked Syllabus
 Initial Proposal
 Final Report
Principles Of Physics I (Ga Southern), William Baird, Jeffery Secrest
Principles Of Physics I (Ga Southern), William Baird, Jeffery Secrest
Physics and Astronomy Grants Collections
This Grants Collection for Principles of Physics I was created under a Round Ten ALG Textbook Transformation Grant.
Affordable Learning Georgia Grants Collections are intended to provide faculty with the frameworks to quickly implement or revise the same materials as a Textbook Transformation Grants team, along with the aims and lessons learned from project teams during the implementation process.
Documents are in .pdf format, with a separate .docx (Word) version available for download. Each collection contains the following materials:
 Linked Syllabus
 Initial Proposal
 Final Report
The Development Of A Diffraction Grating For An Element Of Directional Output Of Radiation From Microlasers, Evgenii Levdik
The Development Of A Diffraction Grating For An Element Of Directional Output Of Radiation From Microlasers, Evgenii Levdik
The International Student Science Fair 2018
In nanophotonics, axisymmetric microlasers became widespread. As they have lots of advantages, they can be used in many scientific and industrial areas, such as microchips for data transfer in order to make electrical circuits smaller. But there is a drawback: they radiate in all directions in the plane of the substrate. This is why elements of directional output of radiation are being developed. A necessary part of such element is the diffraction grating applied to the surface of the waveguide. Such gratings are already being created, but with very expensive methods, for example, electronic lithography. We present a technique for ...
Determining The Activation Energy Of Glucose Syrup Using The Arrhenius Equation, Utkarsh Sharma
Determining The Activation Energy Of Glucose Syrup Using The Arrhenius Equation, Utkarsh Sharma
The International Student Science Fair 2018
This experiment finds the activation energy of corn syrup using the Arrhenius equation. This was done through a simple experiment of dropping a ball into corn syrup and measuring its terminal velocity. From this, the viscosity could be derived, through the use of rearrangement of Newton’s First Law. The temperature of the corn syrup was also varied through the use of a microwave by raising it to 50 degrees Celsius. It is known that the more viscous a liquid is, the greater the activation energy for the liquid, which is essentially the energy barrier that a molecule has to ...
The Development Of A Diffraction Grating For An Element Of Directional Output Of Radiation From Microlasers, Evgenii Levdik
The Development Of A Diffraction Grating For An Element Of Directional Output Of Radiation From Microlasers, Evgenii Levdik
The International Student Science Fair 2018
In nanophotonics, axisymmetric microlasers became widespread. As they have lots of advantages, they can be used in many scientific and industrial areas, such as microchips for data transfer in order to make electrical circuits smaller. But there is a drawback: they radiate in all directions in the plane of the substrate. This is why elements of directional output of radiation are being developed. A necessary part of such element is the diffraction grating applied to the surface of the waveguide. Such gratings are already being created, but with very expensive methods, for example, electronic lithography. We present a technique for ...
Light, Electricity And Semiconductors, Josephine Zhao
Light, Electricity And Semiconductors, Josephine Zhao
The International Student Science Fair 2018
No abstract provided.
Searching For A Connection Between Radio Emission And Uv/Optical Absorption In Quasars, Sean S. Haas, Carla P. Quintero, Paola Rodriguez Hidalgo
Searching For A Connection Between Radio Emission And Uv/Optical Absorption In Quasars, Sean S. Haas, Carla P. Quintero, Paola Rodriguez Hidalgo
IdeaFest: Interdisciplinary Journal of Creative Works and Research from Humboldt State University
No abstract provided.
Energy Conversion System For Travelers (Ecost), Thipok Bovornratanaraks
Energy Conversion System For Travelers (Ecost), Thipok Bovornratanaraks
The International Student Science Fair 2018
We have innovated “The Energy Conversion System for Travelers” or the ECoST. With the fact that most travelers have wheeled cabinbags, whilst walking, the wheels will rotate so why don’t we harvest electricity from this kinetic energy? We thus install our innovation, the ECoST, to the bag to generate electricity from the spinning wheels. The electricity is then kept in the storage unit and ready to charge your empty battery devices in an emergency case via a USB port. To make life easy, our ECoST was designed to replicate the power bank charging method; therefore, we can charge it ...
Granular Convection And Crystallization Of A TwoDimensional Granular Medium, Donley S. Cormode
Granular Convection And Crystallization Of A TwoDimensional Granular Medium, Donley S. Cormode
Honors Projects
Granular media are everywhere from beaches to factories to your kitchen cabinets. There are a rich array of phenomena to study with granular media. These include granular convection, jamming, and crystallization. The systems tend to be macroscopic, so it is easy to collect data. The supplies are lowcost and easy to obtain. Studying granular media gives researchers the opportunity to explore foundational ideas in fields such as crystallography and condensed matter. This paper describes a simple, low cost apparatus used to study a vertically shaken twodimensional granular medium of glass beads. This paper will also describe a few preliminary studies ...
Cataclysmic Variable Stars In The Sloan Digital Sky Survey, Sinead Humphrey, Samantha Smiley, Andres Munoz, Brian Saboriendo
Cataclysmic Variable Stars In The Sloan Digital Sky Survey, Sinead Humphrey, Samantha Smiley, Andres Munoz, Brian Saboriendo
DePaul Discoveries
The purpose of this study is to identify Cataclysmic Variables (CVs) using spectroscopic and photometric data. CVs are useful for studying plasma physics in extreme conditions such as the high temperature and strong magnetic fields seen in CV accretion disks. They are also critical for understanding the evolution of binary stars, both in the field and in globular clusters. This project used photometric and spectroscopic data from the Sloan Digital Sky Survey (SDSS) to identify and classify CVs. 6,000 objects were selected based on multicolor criteria and analyzed using spectral data. Approximately 1% of these objects in the sample ...
Collaborative Research: Fundamental Mechanisms Of Microfluidic TravelingWave Electrophoresis, Boyd F. Edwards
Collaborative Research: Fundamental Mechanisms Of Microfluidic TravelingWave Electrophoresis, Boyd F. Edwards
Funded Research Records
No abstract provided.
Investigating Student Understanding Of Vector Calculus In UpperDivision Electricity And Magnetism: Construction And Determination Of Differential Element In NonCartesian Coordinate Systems, Benjamin Schermerhorn
Investigating Student Understanding Of Vector Calculus In UpperDivision Electricity And Magnetism: Construction And Determination Of Differential Element In NonCartesian Coordinate Systems, Benjamin Schermerhorn
Electronic Theses and Dissertations
Differential length, area, and volume elements appear ubiquitously over the course of upperdivision electricity and magnetism (E&M), used to sum the effects of or determine expressions for electric or magnetic fields. Given the plethora of tasks with spherical and cylindrical symmetry, nonCartesian coordinates are commonly used, which include scaling factors as coefficients for the differential terms to account for the curvature of space. Furthermore, the application to vector fields means differential lengths and areas are vector quantities. So far, little of the education research in E&M has explored student understanding and construction of the nonCartesian differential elements used in applications of vector calculus. This study contributes to the research base on the learning and teaching of these quantities.
Following course observations of juniorlevel E&M, targeted investigations were conducted to categorize student understanding of the properties of these differentials as they are constructed in a coordinate system without a physics context and as they are determined within common physics tasks. In general, students did not have a strong understanding of the geometry of nonCartesian coordinate systems. However, students who were able to construct differential area and volume elements as a product of differential lengths within a given coordinate system were more successful when applying vector calculus. The results of this study were used to develop preliminary instructional resources to aid in the teaching of this material.
Lastly, this dissertation presents a theoretical model developed within the context of this study to describe students’ construction and interpretation of equations. The model joins existing theoretical frameworks: symbolic forms, used to describe students’ representational understanding of the structure of the constructed equation; and conceptual blending, which has been used to describe the ways in which students combine mathematics and physics knowledge when problem solving. In addition to providing a coherent picture for how the students in this study connect contextual information to symbolic representations, this model is broadly applicable as an analytical lens and allows for a detailed reinterpretation of similar analyses using these frameworks.
Efficient Quantum Approximation : Examining The Efficiency Of Select Universal Gate Sets In Approximating 1Qubit Quantum Gates., Brent A. Mode
Efficient Quantum Approximation : Examining The Efficiency Of Select Universal Gate Sets In Approximating 1Qubit Quantum Gates., Brent A. Mode
College of Arts & Sciences Senior Honors Theses
Quantum computation is of current ubiquitous interest in physics, computer science, and the public interest. In the notsodistant future, quantum computers will be relatively common pieces of research equipment. Eventually, one can expect an actively quantum computer to be a common feature of life. In this work, I study the approximation efficiency of several common universal quantum gate sets at short sequence lengths using an implementation of the SolovayKitaev algorithm. I begin by developing from almost nothing the relevant formal mathematics to rigorously describe what one means by the terms universal gate set and covering efficiency. I then describe some ...
On The Quantization Of Plane Gravitational Waves In Loop Quantum Gravity, Elise Lepage '18
On The Quantization Of Plane Gravitational Waves In Loop Quantum Gravity, Elise Lepage '18
Physics Theses
Gravitational waves are oscillations in the geometry of spacetime caused by the movement of mass or energy. In loop quantum gravity, geometry is quantized so spatial quantities such as area and volume take on discrete values. We worked on quantizing plane gravitational waves, which propagate in one direction and have uniform wavefronts perpendicular to the direction of travel, using the method of canonical quantization on general relativity.
For canonical quantization, a theory is expressed in terms of its canonical variables and constraints on those variables, then the variables and constraints are taken to quantum operators and the states of the ...
A Human Powered MicroGenerator For Charging Electronic Devices, John Adam
A Human Powered MicroGenerator For Charging Electronic Devices, John Adam
Senior Theses
A handpulled generator has been designed and tested. A preliminary result has been obtained and discussed. This device was created to provide outletfree charging. Electronic devices are useful when going out into the wilderness. A portable power supply is necessary to keep an electronic device alive. This project created a device that converts human energy into electricity to charge electronic devices. This thesis overviews the device’s design, build, and tests. Two different tests were run to determine that the device is capable of charging the storage battery. The device presented can provide 14 minutes of charging time with one ...
Measuring The Double Layer Capacitance Of Electrolytes With Varied Concentrations, Geoffrey Rath
Measuring The Double Layer Capacitance Of Electrolytes With Varied Concentrations, Geoffrey Rath
Senior Theses
When electric potentials are applied from an electrolytic fluid to a metal, a double layer capacitor, C_{dl}, develops at the interface. The layer directly at the interface is called the Stern layer and has a thickness equal to roughly the size of the ions in the fluid. The next layer, the diffuse layer, arises from the gathering of like charges in the Stern layer. This layer is the distance needed for ionic charges to return to equilibrium. This distance, called the Debye length, λ, depends on the square root of the electrolyte concentration. To study the properties of the ...
Effects Of Tension On Resonant Frequencies Of Strings, Blake Burnett
Effects Of Tension On Resonant Frequencies Of Strings, Blake Burnett
Senior Theses
This project tests and explores resonance of strings. Since all materials and mechanisms are affected by vibrations, it is important to know the frequencies at which resonance occurs. To explore this subject, strings were used as a model material to test the effect tension has on resonance. The fundamental frequencies and the corresponding modes of resonance were used to analyze the data. The results of this experiment show that increasing tension on a string increases its resonance frequency. Understanding the physics behind resonance frequency allows systems to be designed to take advantage of resonance properties, or to avoid resonance where ...
The Drag Coefficient Of Varying Dimple Patterns, James M. Seeley, Michael S. Crosser
The Drag Coefficient Of Varying Dimple Patterns, James M. Seeley, Michael S. Crosser
Senior Theses
There are many golf balls on the market today with varying dimple sizes, shapes, and distribution. These proprietary differences are all designed to reduce drag on the balls during flight, allowing golfers to hit the ball farther distances. There are limited published studies comparing how varying the dimples affects the reduction of drag. An experiment was developed in which golf balls were pulled through a water tank to measure the drag force acting on each ball. The water was chosen to allow for testing at slower velocities than the typical necessary speeds to cause turbulence for balls traveling in air ...
The Computational Study Of Fly Swarms & Complexity, Austin Bebee
The Computational Study Of Fly Swarms & Complexity, Austin Bebee
Senior Theses
A system is considered complex if it is composed of individual parts that abide by their own set of rules, while the system, as a whole, will produce nondeterministic properties. This prevents the behavior of such systems from being accurately predicted. The motivation for studying complexity spurs from the fact that it is a fundamental aspect of innumerable systems. Among complex systems, fly swarms are relatively simple, but even so they are still not well understood. In this research, several computational models were developed to assist with the understanding of fly swarms. These models were primarily analyzed by using the ...
Increasing The Longevity Of Tungsten Filaments In A Zone Refiner, Byron D. Greenlee
Increasing The Longevity Of Tungsten Filaments In A Zone Refiner, Byron D. Greenlee
Senior Theses
Zone refining is used for its ability to purify material and grow single crystals. To produce these single crystals, a suspended molten zone, generated by electron bombardment, passes along the polycrystalline stock. During a zone refining run, the filaments that produce the electron bombardment can fail. In this project, the longevity of tungsten filaments in a zone refiner was investigated. A new bombardment geometry was constructed to attempt to increase the longevity of the filaments. The new geometry had a shield machined into it to prevent lineofsight impurities originating in the molten zone from striking the filaments. It was found ...
The Effects Of Surface Pace In Baseball, Jason Farlow
The Effects Of Surface Pace In Baseball, Jason Farlow
Senior Theses
A baseball travels across different surfaces at different paces. The goal of this experiment is to find a percentage difference in speeds the ball will reflect off a given surface. The energy lost on the turf surface was far more significant than on dirt surface as the turf lost an average of 26% of its energy as compared to just 16% of the energy on dirt. In the Northwest conference, teams play on four turfbased infields and five dirtbased infields. The results of this study suggest that kinetic friction forces are more significant in reducing ball rebound speed than in ...
Thermoelectrics And Thermoelectric Devices, Benjamin T. Erck
Thermoelectrics And Thermoelectric Devices, Benjamin T. Erck
Senior Theses
The field of thermoelectrics has many applications, and more are found in everyday systems. From its current studies, it is apparent that improving the figure of merit zT (which defines a good thermoelectric material) is important in the effectiveness of power generation. Another important part of thermoelectrics is the duality of these devices. They can both move heat and generate power, depending on their role in the system. In this thesis research, a process was made to test these thermoelectric relationships for a few Peltier devices in order to understand their efficiencies and what systems they can be applied to.
Echoes Of The Past: The Effect Of Background Experience On Far Transfer, Graham H. HummelHall
Echoes Of The Past: The Effect Of Background Experience On Far Transfer, Graham H. HummelHall
Electronic Theses and Dissertations
Far transfer is the application of knowledge learned in one setting to a problem in a very different setting. This multimethod study looked at far transfer in humans and whether it could be facilitated, inhibited, or remain unaffected by the number of courses or years a student at a university spent learning about the subject matter of the knowledge being transferred. Through quantitative and qualitative analysis of pretest and posttest data from an introductory undergraduate earth science course, I found that students with more physical science background experience more frequently engaged in successful and accurate transfer of physics information to ...
Experimentally Investigating Water Aerosol Formation Via Alpha Radiation In A Humid Nitrogen Atmosphere, Megan Payne
Experimentally Investigating Water Aerosol Formation Via Alpha Radiation In A Humid Nitrogen Atmosphere, Megan Payne
Honors Theses
This project aims to verify the formation of water aerosols induced by an ionizing radiation source in a Nitrogen atmosphere with various levels of humidity. This work is part of an effort to characterize the overall signature of ionizing radiation in Earth’s typical atmosphere. By signature, it is meant all the chemical reactions and physical processes that take place between Earth’s atmosphere and the ionizing radiation. This signature can potentially be used to identify a radiation source out in the field. The identification of a radiation source could potentially be used in a variety of defense applications. To ...
The Pope's Rhinoceros And Quantum Mechanics, Michael Gulas
The Pope's Rhinoceros And Quantum Mechanics, Michael Gulas
Honors Projects
In this project, I unravel various mathematical milestones and relate them to the human experience. I show and explain the solution to the Tautochrone, a popular variation on the Brachistochrone, which details a major battle between Leibniz and Newton for the title of inventor of Calculus. One way to solve the Tautochrone is using Laplace Transforms; in this project I expound on common functions that get transformed and how those can be used to solve the Tautochrone. I then connect the solution of the Tautochrone to clock making. From this understanding of clocks, I examine mankind’s understanding of time ...