Bulletin of the American Physical Society
Fall 2021 Meeting of the Eastern Great Lakes Section
Volume 66, Number 15
Friday–Saturday, November 12–13, 2021; Virtual; Eastern Time
Session J01: Oral Session 1 |
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Chair: Niklas Manz, College of Wooster |
Saturday, November 13, 2021 10:15AM - 10:30AM |
J01.00001: Physics Labs During a Pandemic: A Mount Union Tale Robert Ekey During the Covid Pandemic, we quickly had to learn how to move our hands-on introductory laboratory experiences to an online format. This was utilized for over an academic year, as we developed methods for multi-modal engagement for students who are in quarantine and unable to attend in person. In General Physics I and II Laboratories at Mount Union, we utilized Microsoft Teams and OneNote to allow groups to complete concept sheets and experiments as a group using their individual computers. When a student participates virtually, they use the video chat function in Teams to interact remotely with their group members and instructor/TA, and handouts and related videos and data are posted to our learning management system. This talk will describe how this method compared with our typical laboratory experience including the student performance on the Force Concept Inventory. [Preview Abstract] |
Saturday, November 13, 2021 10:30AM - 10:45AM |
J01.00002: Exploring Physics Concepts with Computational Essays Andrea Houck, Bhujyo Bhattacharya Computational essays communicate complex concepts using a combination of text, input code, and computer output. Due to their interactive nature, computational essays are ideal for investigating, describing, and demonstrating ideas in introductory physics. We demonstrate concepts such as simple harmonic motion and refraction of light using Mathematica as our computational platform. In this presentation, I will demonstrate how we create and animate a visual representation of a horizontal mass and spring system on a frictionless surface to help visualize a simple harmonic motion. The physics concepts are also communicated by plotting the position, velocity, and acceleration of the block as functions of time. In another computational essay, we determine the optical path of light rays through two or three media to visualize the apparent position of a fish in a pond or a tank. This essay helps us understand the ideas behind refraction of light. I will discuss how computational essays further allow us to test the limits of each problem and approach problems too difficult or time consuming to solve by hand. [Preview Abstract] |
Saturday, November 13, 2021 10:45AM - 11:00AM |
J01.00003: A STEMcoding Data Science Curriculum Richelle Teeling-Smith, Chris Orban Students, parents, and teachers are increasingly dissatisfied with the algebra to calculus high school math sequence, and many see ``data science" as a highly relevant subject that utilizes many of the same conceptual underpinnings in a computational context and think it could be a potential alternative. But, as of yet, there is no widespread agreement about what high school ``data science" should cover. We are developing a physical science-informed high school data science course that will be useful in a variety of physics and astronomy courses. This course emphasizes the computational thinking and data processing tools indicative of data science and includes hands-on direct measurement activities that are suitable for a physics classroom. We are excited to share our progress on this work which was recently funded by the American Institute of Physics Meggers Award. [Preview Abstract] |
Saturday, November 13, 2021 11:00AM - 11:15AM |
J01.00004: Constructing a 3D Printable Microscope with Video Projector Illumination Neha Sunil, Leqi Li, Josh Uy, Edward Carlo Samson Using physical filters in traditional microscopes to produce different types of contrast-enhanced imaging is both costly and time-consuming. We investigated the results of imaging data taken from our constructed 3D printable lens system utilizing structured illumination from a quick and affordable source, a video projector. Our group set up a Raspberry Pi camera as well as condenser and objective lenses to capture a specimen’s images illuminated by dark background and grey annulus to result in dark field illumination. Taking pictures of a 1951 USAF Resolution chart we analyzed the imaging resolution of our system. The modulation transfer function and point spread function of our image contrast data showed an imaging resolution of approximately 10 microns. We will discuss the design of our 3D printable microscope and the effects the geometry of the projected pattern has on the images of our acquired specimen. [Preview Abstract] |
Saturday, November 13, 2021 11:15AM - 11:30AM |
J01.00005: Modelling PII Emission to Aid in the Search for Life Kevin Hoy, Sultana Nahar, Anil Pradhan Being the ``backbone'' element of DNA, Phosphorus is a key element in the search for life in the Universe. To aid in future search for Phosphorus in star-forming regions and thereby in exoplanets, we have constructed a line ratios emission model for PII. This low ionization state is likely to exist in gaseous nebulae with stellar formation and in exoplanetary atmospheres if those atmospheres contain any significant amount of P. There are also 3 primary lines in PII emission spectrum at 20, 30, and 60 $\mu $m that may be detected in the Far Infra-Red. These two facts make this specific ion especially useful in the search for DNA-based life in the universe. [Preview Abstract] |
Saturday, November 13, 2021 11:30AM - 11:45AM |
J01.00006: Dwarf Spheroidal Galaxy Dispersions Calculated with the MOND External Field Effect Noshin Yesmin, Will Snider, S. G. Alexander We present calculated dispersion profiles of four Milky Way dwarf spheroidal satellite galaxies, which include the Modified Newtonian Dynamics (MOND) external field effect (EFE). Our model of dwarf spheroidal galaxies (dSphs) contains ten thousand stars, and the internal gravity of the dwarf is modeled as Plummer potential. In addition, we treat the host galaxy as a fixed point mass whose gravitational field is not affected by the dwarf galaxy. We calculate the motion of the 10k stars for several billion years, and then calculate time-averaged bulk dispersion and dispersion profile statistically. We include results for Newtonian gravity, isolated MOND, and EFE MOND and compare them to observations. [Preview Abstract] |
Saturday, November 13, 2021 11:45AM - 12:00PM |
J01.00007: Speed Faster than Light by Means of the Hubble Telescope's Data and the Hubble's Law Gh. Saleh, M. J. Faraji, R. Alizadeh Dahdahli Each planet, each star and each galaxy as well as the whole Universe have a precise age and that it is necessary to attribute a beginning to it, like the Earth whose life span is 4 billion years. It is necessary to take into account the beginning of life, about 2.4 billion years ago, and the fact that before, it was only a dull sphere composed of primary materials.14 billion years have passed since the beginning of the Universe or the beginning of the Big Bang, a proven value which is very close to the real value. We consider that the lifetime of the Universe is 14 billion years, and this is the time that has elapsed from the beginning of the Big Bang to the present moment. Recently a galaxy was identified by a team that studying data from the Hubble Space Telescope and Spitzer Space Telescope that named GN-z11 which has 32 billion light-years of distance. In this paper, we are going to use this data and the Hubble's law to proof the Existence of Speed Faster than Light in the universe. [Preview Abstract] |
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