# Physics Commons™

Articles 1 - 30 of 178

## Full-Text Articles in Physics

Crosssections, Summer 2020, University Of Northern Iowa. Department Of Physics. Jul 2020

#### Crosssections, Summer 2020, University Of Northern Iowa. Department Of Physics.

##### CrossSections

Inside This Issue:
--Faculty Profile Pavel Lukashev
--Department Happenings
--Focus on Students
--Physics Education
--Alumni Profile Wes Golden
--Alumni News
--Retrospective
--New Physics
--Support the Department

Data Supporting The Paper "The Role Of Turbulent Fluctuations In Aerosol Activation And Cloud Formation", Prasanth Prabhakaran, Abu Sayeed Md Shawon, Greg Kinney, Subin Thomas, Will Cantrell, Raymond Shaw May 2020

#### Data Supporting The Paper "The Role Of Turbulent Fluctuations In Aerosol Activation And Cloud Formation", Prasanth Prabhakaran, Abu Sayeed Md Shawon, Greg Kinney, Subin Thomas, Will Cantrell, Raymond Shaw

##### Data Files

This data supports the following paper:

Prasanth Prabhakaran, Abu Sayeed Md Shawon, Gregory Kinney, Subin Thomas, Will Cantrell and Raymond A. Shaw, “The role of turbulent fluctuations in aerosol activation and cloud formation”, Proceedings of the National Academy of Sciences (2020), in review.

Charged Particle Identification Using Calorimetry And Tracking At The Belle Ii Experiment, Joseph T. Nunziata, Atanu Pathak, Swagato Banerjee Apr 2020

#### Charged Particle Identification Using Calorimetry And Tracking At The Belle Ii Experiment, Joseph T. Nunziata, Atanu Pathak, Swagato Banerjee

##### Undergraduate Arts and Research Showcase

Particle identification (PID) is a critical procedure carried out in high energy physics experiments in search of new physics. When particles of matter (i.e., an electron) and antimatter (i.e., a positron) collide, new types of particles may form given certain conditions. Such particles may be classified as hadrons--which feel the strong nuclear force--and leptons--which do not. Identifying particles at the Belle II experiment is done by combining the measurement of energy deposited in the calorimeter with the measurement of track momentum in the tracker. In a tau lepton ($\tau$) decay sample, particles such as electrons, muons, and pions ...

Size-Controlled Synthesis Of Nickel Nanoparticles Enclosed In Carbon Nanocages, Felicity Peebles, Grigorii Rudakov Apr 2020

#### Size-Controlled Synthesis Of Nickel Nanoparticles Enclosed In Carbon Nanocages, Felicity Peebles, Grigorii Rudakov

##### Undergraduate Arts and Research Showcase

We have demonstrated a simple, scalable, and tunable method of obtaining densely packed Ni Nanoparticles encapsulated in Carbon Nanocages (Ni@CNCs). Using a facile method, it was shown that via a simple annealing process of precursor based on nickel acetate and citric acid, Ni@CNCs with sizes varying from 5 to 20 nm can be synthesized by changing the heating ramp rate during the synthesis from 25 to 53 °C/min. The final temperature of 600 °C was held for 10 min, and was the same for all the samples. X-Ray Diffraction (XRD) multiple peaks analysis was performed to show ...

Apr 2020

#### Sulfur Dioxide From The Atmospheric Chemistry Experiment Satellite, Doug Cameron

##### College of Sciences Posters

The version 4.0 dataset from the Atmospheric Chemistry Experiment – Fourier Transform Spectrometer (ACE-FTS) on SCISAT, released in March of 2019, has sulfur dioxide (SO2) volume mixing ratio (VMR) profiles as a routine data product. From this dataset, global SO2 distributions between the altitudes of 10.5 km and 23.5 km are analyzed. The global distribution of all SO2 VMR data by altitude is broken down into 30° and 5° latitude zones. Seasonality of the global SO2 distribution is explored. Volcanic SO2 plumes are isolated in the dataset and compared with extinction data from ...

Validation Of Upgrade Of The Geant4 Simulation Toolkit To Model The Responses From Top And Arich Detectors, Dominic M Smith, Mason A. Ross, Swagato Banerjee, Davis N. Brown Jan 2020

#### Validation Of Upgrade Of The Geant4 Simulation Toolkit To Model The Responses From Top And Arich Detectors, Dominic M Smith, Mason A. Ross, Swagato Banerjee, Davis N. Brown

##### Undergraduate Arts and Research Showcase

Belle II is the next generation B-Factory experiment at the world's highest luminosity accelerator the SuperKEKB collider, which is designed to collect 50 times more data than the previous generation experiments. A hallmark feature of B-Factory experiments is to use novel characteristics of Cherenkov detectors for identification of the flavor of charged particles passing through the detector. The TOP and the ARICH detectors can identify charged pions and kaons with high precision. The response to the passage of high energetic particles in the detector is modeled with the Geant4 simulation toolkit. Here we compare the performances of these two ...

Validating The Belle2 Physicslist In Geant4 V10.1.2, Dustyn D Hofer, Swagato Banerjee Dr., David N. Brown Dr., Atanu Pathak Jan 2020

#### Validating The Belle2 Physicslist In Geant4 V10.1.2, Dustyn D Hofer, Swagato Banerjee Dr., David N. Brown Dr., Atanu Pathak

##### Undergraduate Arts and Research Showcase

Since the start of software development at the Belle II experiment operating at the KEK national laboratory in Tsukuba, Japan, the simulation tool kit Geant4 has undergone several updates. As a member in the ongoing collaboration, the University of Louisville’s High Energy Physics (HEP) group is striving to validate newer versions of Geant4 to maximize improvements of physics performance.We have simulated the performance of a new physics list sub-module, the "Belle2 PhysicsList", with improved modeling of hadronic shower shape and standard electromagnetic processes. Using a reconstruction-based selection procedure on tau-pair events decaying into a final state consisting ofe ...

Validation Of Geant4 Upgrade To Model Response From Muons Passing Through The Klm Detector At The Belle Ii Experiment., Stephen C Temple, Swagato Banerjee Ph.D, David N. Brown Ph.D Jan 2020

#### Validation Of Geant4 Upgrade To Model Response From Muons Passing Through The Klm Detector At The Belle Ii Experiment., Stephen C Temple, Swagato Banerjee Ph.D, David N. Brown Ph.D

##### Undergraduate Arts and Research Showcase

The KLM detector or K0L- Muon Detector is equipped on the outermost layer of the Belle II detector structure. The detector is designed to detect the KL mesons and muons above 600 MeV/c with high efficiency. The barrel shaped region around the intersection point covers a polar angular range of 45° to 125° while the forward and backward end caps extend this range to 20° to 155°. With the upgraded Geant4 model we observe the effectiveness of the new PhysicsList.

Brownstein (Kenneth Robert) Papers, 1967-2001, Special Collections, Raymond H. Fogler Library, University Of Maine Jan 2020

#### Brownstein (Kenneth Robert) Papers, 1967-2001, Special Collections, Raymond H. Fogler Library, University Of Maine

##### Finding Aids

Kenneth Brownstein graduated with a Ph.D. in physics from Rensselaer Polytechnic Institute. He came to the University of Maine in 1965 as a professor in the Department of Physics and Astronomy. Brownstein was a prolific author of articles and served as the chair of the Department of Physics and Astronomy from 1992 to 1998. Brownstein retired in 2004 with emeritus status. Brownstein died in 2008.

The records mainly contain textual information but also contains some computer discs containing manuscripts of Brownstein's text book on quantum mechanics. Also, includes a facsimile of an obituary for Brownstein, copies of various ...

How Planets And Moons Were Made, Paul G. Lewis Jan 2020

#### How Planets And Moons Were Made, Paul G. Lewis

##### Science and Mathematical Science

When scientists directed their investigations to the “tides,” meteorological as well as astronomical, they were entering upon that path which leads directly to the solution of how planets and their respective moons were formed. However, these investigations, even though thorough as far as carried on, were not extended beyond what I call the “standard” tide. The very next step forward opens the gateway wide into what has been classed a secret or mystery. All scientific researches and investigations seemed to have stopped at the very door of this fountain of knowledge in spite of the fact that no one could ...

Problems In Physics, Eben Norton Horsford Jan 2020

#### Problems In Physics, Eben Norton Horsford

##### Science and Mathematical Science

No abstract provided.

Introduction To Classical Field Theory, Charles G. Torre Aug 2019

#### Introduction To Classical Field Theory, Charles G. Torre

##### All Complete Monographs

This is an introduction to classical field theory. Topics treated include: Klein-Gordon field, electromagnetic field, scalar electrodynamics, Dirac field, Yang-Mills field, gravitational field, Noether theorems relating symmetries and conservation laws, spontaneous symmetry breaking, Lagrangian and Hamiltonian formalisms.

Principles Of Physics Ii (Ga Southern), William Baird, Jeffery Secrest Jul 2019

#### Principles Of Physics Ii (Ga Southern), William Baird, Jeffery Secrest

##### Physics and Astronomy Grants Collections

This Grants Collection for Principles of Physics II was created under a Round Twelve 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:

• Initial Proposal
• Final Report

Crosssections, Summer 2019, University Of Northern Iowa. Department Of Physics. Jul 2019

#### Crosssections, Summer 2019, University Of Northern Iowa. Department Of Physics.

##### CrossSections

Inside This Issue:
-- A Message From the Department Head, Dr. Paul Shand
-- Faculty Profile Ali Tabei
-- Department Happenings
-- Student Profile Krissy Nielsen
-- Focus on Students
-- Physics Education
-- Alumni Profile Chuck Pelton
-- Alumni News
-- In Memoriam
-- Support the Department

3d Imaging Of A Binary Colloidal Fluid, Kate Livermore, Michael Korth Mar 2019

#### 3d Imaging Of A Binary Colloidal Fluid, Kate Livermore, Michael Korth

##### Undergraduate Research Symposium 2019

In order to understand the nature of colloidal fluids, we wanted to visualize a 3D representation of their thermodynamic distribution. Colloidal fluids are fluids that consist of two parts: colloidal particles and a dispensing medium. Some examples include toothpaste, mayonnaise, plaster, and muddy water. We could also think about colloidal fluids simply as a mixture of two or more parts. In this poster, we used the hard-sphere system to represent the structure of colloidal fluids in a 3D graph using Mathematica (MMA). In the hard-sphere system, we used two different sizes of impenetrable spheres that could not overlap to represent ...

University Physics I: Classical Mechanics, Julio Gea-Banacloche Feb 2019

#### University Physics I: Classical Mechanics, Julio Gea-Banacloche

##### Open Educational Resources

This is a textbook for the first semester of University Physics for scientists and engineers. It covers classical mechanics, and a brief introduction to thermodynamics. The presentation and approach are similar to Mazur’s “The Principles and Practice of Physics,” in that conservation laws are introduced before forces, and one-dimensional systems thoroughly covered before moving to two dimensions. Although the course is “calculus based,” the book has been written with the understanding that many students may be taking calculus simultaneously as a corequisite, so the use of calculus is relatively sparse.

This revised version (Fall 2019) takes into account a ...

Saturation And Alternate Pathways In Four-Wave Mixing In Rubidium, Erik Brekke, Noah Swan Feb 2019

#### Saturation And Alternate Pathways In Four-Wave Mixing In Rubidium, Erik Brekke, Noah Swan

##### Faculty Creative and Scholarly Works

We have examined the frequency spectrum of the blue light generated via four-wave mixing in a rubidium vapor cell inside a ring cavity. At high atomic density and input laser power, two distinct frequency components separated by 116±4  MHz are observed, indicating alternate four-wave mixing channels through the 6p3/2 hyperfine states. The dependence of the generated light on excitation intensity and atomic density are explored, and they indicate that the primary process has saturated. This saturation results when the excitation rate through the 6p state becomes equal to the rate through the 5p state, giving no further gain ...

02 Getting Started With Vpython, W.A. Morgan, L.Q. English Jan 2019

#### 02 Getting Started With Vpython, W.A. Morgan, L.Q. English

##### VPython for Introductory Mechanics

Chapter 2 serves as an introduction to the GlowScript VPython environment. The student is shown how to enter GlowScript via a browser. The student is asked to create simple programs, including ones that print, make shapes, and shown how to create comments in a program.

04 A First Look At Simulating Motion, W.A. Morgan, L.Q. English Jan 2019

#### 04 A First Look At Simulating Motion, W.A. Morgan, L.Q. English

##### VPython for Introductory Mechanics

In chapter 4, students are introduced to the mathematics behind the Euler method, as well as the coding involved. Students are given code and then asked to modify it.

09 Two Capstone Projects, W.A. Morgan, L.Q. English Jan 2019

#### 09 Two Capstone Projects, W.A. Morgan, L.Q. English

##### VPython for Introductory Mechanics

In chapter 9, students are introduced to the concept of Gravitational Assist, which is used to send probes to the outer planets and out of the solar system. Frames of reference are considered, as well as the energy of the probe and of the planet providing the assist. The code is provided, and exercises are suggested. Finally, chaotic orbital dynamics of an asteroid in the vicinity of a binary system is explored."

05 Visualizing Projectile Motion, W.A. Morgan, L.Q. English Jan 2019

#### 05 Visualizing Projectile Motion, W.A. Morgan, L.Q. English

##### VPython for Introductory Mechanics

In chapter 5, students are introduced to the kinematic equations describing an object undergoing a constant acceleration. Students are asked to write code simulating the flight of a projectile over level ground and sloping ground. The students are asked to have the projectile strike a target, using position vectors. The students are asked to annotate a VPython “mystery code”.

03 Moving Objects Using Formulas, W.A. Morgan, L.Q. English Jan 2019

#### 03 Moving Objects Using Formulas, W.A. Morgan, L.Q. English

##### VPython for Introductory Mechanics

In chapter 3, the student is asked to program the motion of a ball with constant velocity, to plot the position with respect to time of the ball moving with constant velocity, and to simulate the motion of a ball undergoing a constant acceleration (near the surface of the Earth). The student is shown what is happening in a conditional loop. Finally, the student plots the circular motion of a body around an object, using trigonometric functions.

Vpython For Introductory Mechanics: Complete Version, Windsor A. Morgan, Lars Q. English Jan 2019

#### Vpython For Introductory Mechanics: Complete Version, Windsor A. Morgan, Lars Q. English

##### VPython for Introductory Mechanics

This book adds a computational dimension to introductory physics mechanics course, and is intended to accompany the textbook and other course materials for that course. It uses the programming language VPython in the browser-based GlowScript environment. It starts with simple computing and physics examples and moves to more sophisticated topics in succeeding chapters.

Computational topics include Position vs. Time Graphs, use of vectors, plotting motion of objects, and programming skills such as the cross product.

Physics topics include the kinematic equations, torque, angular momentum, projectile motion of a body, the law of universal gravitation, and gravitational assist.

10 Conclusion, W.A. Morgan, L.Q. English Jan 2019

#### 10 Conclusion, W.A. Morgan, L.Q. English

##### VPython for Introductory Mechanics

This document provides a conclusion to VPython for Introductory Mechanics by Windsor A. Morgan and Lars Q. English. It includes the book’s bibliography as well as information about the authors.

08 Rotational Motion, Torque, And Angular Momentum, W.A. Morgan, L.Q. English Jan 2019

#### 08 Rotational Motion, Torque, And Angular Momentum, W.A. Morgan, L.Q. English

##### VPython for Introductory Mechanics

In chapter 8, students consider again the motion of a comet around the Sun, but now consider torque and angular momentum. Newton’s Law of Universal Gravitation is introduced, as well as the cross product and how to code it in VPython. Exercises are suggested.

07 Conservation Of Momentum And Energy, W.A. Morgan, L.Q. English Jan 2019

#### 07 Conservation Of Momentum And Energy, W.A. Morgan, L.Q. English

##### VPython for Introductory Mechanics

In chapter 7, students are introduced to the concepts of center of mass, the impulse-momentum theorem, and conservation of energy. This is done by considering a binary star system, mass-spring system, and scattering in the Rutherford Experiment. Exercises are suggested.

01 Introduction, W.A. Morgan, L.Q. English Jan 2019

#### 01 Introduction, W.A. Morgan, L.Q. English

##### VPython for Introductory Mechanics

Readers are introduced to the structure of the book, including a discussion of the topics in each chapter, as well as how the book may be integrated in an introductory physics course.

06 Simulating Central-Force Problems, W.A. Morgan, L.Q. English Jan 2019

#### 06 Simulating Central-Force Problems, W.A. Morgan, L.Q. English

##### VPython for Introductory Mechanics

In chapter 6, students are introduced to the idea of a central force, the idea of a instantaneous acceleration (as opposed to average acceleration) and using the Euler method to determine the position and velocity of the object. They then investigate the physics of a mass on a spring, a projectile in flight undergoing drag, and the motions of planets and comets around the Sun. They are asked to to do several exercises, including imagining a gravitational force that is goes as 1/r instead of 1/r2.

Florida Science: The Science That Makes Florida Different, Terence W. Cavanaugh Jan 2019

#### Florida Science: The Science That Makes Florida Different, Terence W. Cavanaugh

##### Secondary Level Resources

This book was created to assist students with their understanding of how science occurs in Florida. When teaching science or any subject it’s important to remember to begin with the concrete and then move to the abstract. I have found that it has helped my students when I begin by teaching science concepts in a concrete manner and expand from there. For example, when I taught about topographic maps, the students were much more successful in their learning when I started with local topographic maps that included the school and the surrounding area than with places that had mountains ...

Albert Abraham Michelson, "Velocity Of Light"., University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University Jan 2019

#### Albert Abraham Michelson, "Velocity Of Light"., University Archives And Special Collections, Prescott Memorial Library, Louisiana Tech University

##### Manuscript Finding Aids

Facsimile of Michelson's handwritten paper "Experimental Determination of the Velocity of Light", his seminal work in Physics in 1878.