The Journal of Advanced Undergraduate Physics Laboratory Investigations, JAUPLI-BCopyright (c) 2022 University of Lynchburg All rights reserved.
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Recent documents in The Journal of Advanced Undergraduate Physics Laboratory Investigations, JAUPLI-Ben-usThu, 14 Apr 2022 16:45:12 PDT3600Developing a Monte Carlo Simulation for Time- Series Analysis of Actinium-225 Decay
https://digitalshowcase.lynchburg.edu/jaupli-b/vol3/iss1/2
https://digitalshowcase.lynchburg.edu/jaupli-b/vol3/iss1/2Tue, 19 Oct 2021 07:40:12 PDT
This report describes the development of a script programmed in the Python language designed to simulate radioactive decay using Monte Carlo methods. This is to conduct analysis on the equilibrium behavior of a specific radioactive decay chain, replacing the traditional method of deriving a mathematical representation via differential equations. The resulting script produces a stacked histogram illustrating the decay of Actinium-225 over time and more closely models the potential for irregularities in the natural phenomenon. The script has potential applications in nuclear imaging and medical physics.
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Victoria WoodModeling the Motion of a Volleyball with Spin
https://digitalshowcase.lynchburg.edu/jaupli-b/vol3/iss1/1
https://digitalshowcase.lynchburg.edu/jaupli-b/vol3/iss1/1Tue, 19 Oct 2021 07:40:06 PDT
Though a qualitative understanding of how spin affects a ball’s trajectory can be easily developed, a quantitative one is relatively difficult to hone. Additionally, although projectile motion is an extensively covered topic in introductory physics courses, friction and drag—let alone spin—receive little to no attention. Here we use a volleyball and video modeling software to compare the behavior of a non-spinning ball with one that has topspin in order to assess the accuracy of our various models incorporating drag and the Magnus effect.
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Julian RicardoElectrical and Magnetic Properties of High Temperature Superconductors Using Varying forms of Data Acquisition
https://digitalshowcase.lynchburg.edu/jaupli-b/vol2/iss1/3
https://digitalshowcase.lynchburg.edu/jaupli-b/vol2/iss1/3Tue, 19 Oct 2021 07:20:21 PDT
High temperature superconductors (HTS) are materials that display superconducting properties at temperatures above that of liquid nitrogen. Possible applications and ease of use in a typical physics laboratory make them interesting systems to study. In this experiment we measured the critical temperatures of two samples made of different HTS materials. We also devised a method that makes taking data automated.
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Aryn M. Hays et al.Shape and Size Matter for Projectile Drag
https://digitalshowcase.lynchburg.edu/jaupli-b/vol2/iss1/2
https://digitalshowcase.lynchburg.edu/jaupli-b/vol2/iss1/2Tue, 19 Oct 2021 07:20:15 PDT
Newtonian mechanics is a fundamental building block of physics education, allowing us to characterize the motion of various objects in every day life. Here, we set out to investigate the effect of air resistance on projectile motion. We use high-speed cameras to record the flight of three different projectiles and compare this motion to a trajectory generated based on our theoretical model. We find that we are able to fit our model to the actual trajectory reasonably well, and find evidence that drag depends on the size and shape of the projectile.
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Daniel Gordon AngModeling a Swinging Atwood Machine
https://digitalshowcase.lynchburg.edu/jaupli-b/vol2/iss1/1
https://digitalshowcase.lynchburg.edu/jaupli-b/vol2/iss1/1Tue, 19 Oct 2021 07:20:09 PDT
The motion of a Swinging Atwood Machine is a difficult to solve for using Newtonian Mechanics. Lagrangian Mechanics, on the other hand, is extremely useful tool for a system that can seem overwhelmingly difficult to solve in Newtonian Mechanics. In this Lab we find the Lagrangian for this Swinging Atwood system, solve for the equation of motion, and compare our model to that of the observed motion of the system. Our model provides a good approximation of the motion, with small discrepancies due to the unknown mass of our pulley and dissipative forces.
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Parker W. MoodyAtomic Force Microscopy
https://digitalshowcase.lynchburg.edu/jaupli-b/vol1/iss1/2
https://digitalshowcase.lynchburg.edu/jaupli-b/vol1/iss1/2Tue, 19 Oct 2021 06:55:10 PDT
The goal of this experiment is to use the Atomic Force Microscope (AFM) to get images of selected items and determine some distances of the characteristics of each sample. The ultimate goal is to measure the length of a nanotube, but unfortunately there were none left on the slide that was supposed to contain them. From the results of the lab and the lab manual of “companies” with possible lengths for each sample, Lindaas-Lahti Industries seems to have the best fit overall.
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Tyler LaneDecay Time of a Damped Pendulum
https://digitalshowcase.lynchburg.edu/jaupli-b/vol1/iss1/1
https://digitalshowcase.lynchburg.edu/jaupli-b/vol1/iss1/1Tue, 19 Oct 2021 06:55:04 PDT
A number of labs have been conducted to find the equation for a damped pendulum. A damped pendulum's behavior will be analyzed and fit to this equation. This lab focused on tau, the decay constant. It was hypothesized that the decay constant would be greater with increasing initial angles, ultimately because of the pendulum's greater velocity. A pendulum was hung on a rotary motion sensor to detect its activity when released from different angles from the vertical. Its behavior was observed and fit to the equation for the behavior of a damped pendulum. It was found that decay time and initial angle are not directly proportional. This could be due to a changing frequency in the swing of the pendulum.
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Scott D. Froehle