Browsing by Subject "physics"

Now showing 1 - 6 of 6
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    Achieving the Science Standards: A National Study of Inquiry-Based Instruction in High School Science
    (Center for Applied Research and Educational Improvement, 1999) Huffman, Douglas; Lawrenz, Frances
    The National Science Teachers Association's SS&C(Scope, Sequence & Coordination)project created a new high school science curriculum that coordinated the content in the four basic sciences (life, earth, physics and chemistry) to allow students to study every science every year. The curriculum sequenced activities to encourage teachers to use inquiry-based instruction where students engage in hands-on activities before teachers define concepts.To examine the impact of SS&C, researchers at CAREI designed a comprehensive study comparing students who took SS&C science in 9th and 10th grade to students who did not take the new course. The study used a time-lag design which compares the prior year's science students to the present year's science students. The purpose of the study was to closely examine the effect of the standards-based curriculum on both the classroom learning environment and on students' achievement in the sciences. Thirteen schools implemented the new science course. The schools were located in California, Iowa, Montana, New York, North Carolina, Texas and the District of Columbia and included more than 4,000 ninth graders and 2,500 tenth grade science students.
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    Exploring Augmented Reality for a One-Dimensional Motion Physics Laboratory Experiment
    (2023-05) Joyal, Matthew
    General Physics laboratory experiments can be time-consuming to set up for each class.Additionally, students often have a specific room and limited time to conduct the experiment and draw conclusions. One advantage of moving the labs to an augmented reality setting is that setup time can be lowered. The main motivation, however, would be to allow students more time to explore the experiments on their own outside of class. Because the laboratory experiment is a computer simulation, it could provide students with options not available in a physical lab, for example, one could alter the acceleration due to gravity. With added capabilities, augmented reality laboratory experiments could be used either as a replacement for, or an extension of, traditional laboratory experiments. This paper explores the feasibility of using augmented reality to replace Physics laboratory experiments. A one-dimensional motion Physics laboratory experiment was recreated in the Unity game engine and deployed to the Microsoft Hololens 2. Study participants worked through instructions which had them collect data and perform calculations based on that data. The experiment was conducted as an exploratory study to get feedback on the user interface and how well participants were able to complete the tasks, and to gauge the general response to using augmented reality for a Physics laboratory experiment. Based on early findings, an augmented Physics laboratory experiment appears to provide a suitable replacement, but the provided material and available toolset contribute to the effectiveness of the experience.
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    Indium Oxide Resistance Fluctuation Measurements
    (2021-07-19) Lewellyn, Nicholas A; Goldman, Allen M; goldman@umn.edu; Goldman, Allen M; Goldman Group
    For superconducting indium oxide films with higher disorder, a more conventional superconductor-insulator transition is observed. Low frequency resistance measurements performed on such a film are shown in this dataset. Contrary to initial expectations there were no significant changes in the noise properties near the quantum critical point. However, it was found that the noise varied in a way that was consistent with predictions based on a percolation model. Specifically, the noise properties suggest that the superconductor-insulator transition can be modeled by p-model percolation. This model is based on random Josephson junction array models which have been used extensively to explain the properties of granular superconductors.
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    Resistance versus temperature of an Indium Oxide thin film sample "b15c12" at various applied perpendicular magnetic field values
    (2019-03-14) Lewellyn, Nicholas A; Goldman, Allen M; goldman@umn.edu; Goldman, Allen, M
    Sheet resistance of a thin superconducting amorphous indium oxide film as a function of temperature and perpendicular magnetic field. Increasing field leads to the apparent destruction of the superconducting state and a transition to a metallic high field state.
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    Resistance vs Temperature of an Indium Oxide thin film sample "6.7E-5" at a range of magnetic fields
    (2019-01-09) Percher, Ilana M; Goldman, Allen M; goldman@umn.edu; Goldman, Allen M; Goldman Group; University of Minnesota Condensed Matter Group
    Sheet resistance of a thin superconducting amorphous indium oxide film as a function of temperature and perpendicular magnetic field. Increasing field leads to the apparent destruction of the superconducting state and a transition to a insulator-like high field state.
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    Search for Slow Magnetic Monopoles with the NOvA Far Detector
    (2020-08) Elashri, Mohamed
    The magnetic monopole is a hypothetical particle with a magnetic charge. It is an important field configuration in many Grand Unified Theories. Dirac in 1931 derived a charge quantization condition, which suggests that the existence of one magnetic monopole in the universe will explain electric charge quantization. Since then, a search of the elusive particle has begun, and yet all came with negative results. The NOvA Far Detector is able to probe some of the parameter space for the search for monopoles. To achieve this, two dedicated triggers, one for fast monopoles and the other for slow monopoles, have been developed to record signals. Results for the first 8 months of high-gain slow monopole data were obtained, and a 90% CL limit was established with no monopole observed. The analysis in this thesis is focused on new data with a higher gain, and we have explored potential improvement in efficiency and improvements in the reconstruction algorithm. We have done this analysis on Monte-Carlo generated simulated data to establish efficiencies and examined a control set of the new data to understand its differences from the old.