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The motion of a washer on a vertical steel rod 垫圈在垂直钢棒上的运动
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2023-12-06 DOI: 10.1088/1361-6404/ad0d89
Yao Xingxing, Liu Gongyu, Yang Hancheng, Xiao Ting, Zheng Yuan
{"title":"The motion of a washer on a vertical steel rod","authors":"Yao Xingxing, Liu Gongyu, Yang Hancheng, Xiao Ting, Zheng Yuan","doi":"10.1088/1361-6404/ad0d89","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0d89","url":null,"abstract":"A washer on a vertical steel rod may start spinning instead of simply sliding down. The forces on the washer are analyzed, and the relationship between the angular velocity of rotation and the angular velocity of precession is obtained. A relationship about the coefficient of friction of the washer is obtained at the condition of rotation without slipping. The influence of the coefficient of friction and the ratio of the inner diameter of the washer to the diameter of the rod on the sliding state was investigated experimentally, and a two-dimensional phase diagram of the rotation without slipping was obtained. The relationship between the three parameters(the nutation angle of the washer, the angular velocity of precession, and the final vertical velocity) and the ratio of the inner diameter of the washer to the diameter of the rod in the condition of rotation without slipping was further investigated. The experimental results are in good agreement with the theoretical equations.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138685251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Physics language and language use in physics--What do we know and how AI might enhance language-related research and instruction 物理语言和物理语言的使用--我们知道什么，以及人工智能如何促进语言相关研究和教学
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2023-11-24 DOI: 10.1088/1361-6404/ad0f9c
P. Wulff
{"title":"Physics language and language use in physics--What do we know and how AI might enhance language-related research and instruction","authors":"P. Wulff","doi":"10.1088/1361-6404/ad0f9c","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0f9c","url":null,"abstract":"Language is an important resource for physicists and learners of physics to construe physical phenomena and processes, and communicate ideas. Moreover, any physics-related instructional setting is inherently language-bound, and physics literacy is fundamentally related to comprehending and producing both physics-specific and general language. Consequently, characterizing physics language and understanding language use in physics are important goals for research on physics learning and instructional design. Qualitative physics education research offers a variety of insights into the characteristics of language and language use in physics such as the differences between everyday language and scientific language, or metaphors used to convey concepts. However, qualitative language analysis fails to capture distributional (i.e., quantitative) aspects of language use and is resource-intensive to apply in practice. Integrating quantitative and qualitative language analysis in physics education research might be enhanced by recently advanced artificial intelligence-based technologies such as large language models, as these models were found to be capable to systematically process and analyse language data. Large language models offer new potentials in some language-related tasks in physics education research and instruction, yet they are constrained in various ways. In this scoping review, we seek to demonstrate the multifaceted nature of language and language use in physics and answer the question what potentials and limitations artificial intelligence-based methods such as large language models can have in physics education research and instruction on language and language use.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139239946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Augmented Reality Technology in Teaching about Physics: A systematic review of opportunities and challenges 增强现实技术在物理教学中的应用：机遇与挑战的系统回顾
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2023-11-21 DOI: 10.1088/1361-6404/ad0e84
A. Vidak, V. Mešić, I. Movre Šapić, V. Gomzi
{"title":"Augmented Reality Technology in Teaching about Physics: A systematic review of opportunities and challenges","authors":"A. Vidak, V. Mešić, I. Movre Šapić, V. Gomzi","doi":"10.1088/1361-6404/ad0e84","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0e84","url":null,"abstract":"The use of augmented reality (AR) allows for the integration of digital information onto our perception of the physical world. In this article, we present a comprehensive review of previously published literature on the implementation of augmented reality in physics education, at the school and the university level. Our review includes an analysis of 96 papers from the Scopus and Eric databases, all of which were published between January 1st, 2012 and January 1st, 2023. We evaluated how AR has been used for facilitating learning about physics. Potential AR-based learning activities for different physics topics have been summarized and opportunities, as well as challenges associated with AR-based learning of physics have been reported. It has been shown that AR technologies may facilitate physics learning by: providing complementary visualizations, optimizing cognitive load, allowing for haptic learning, reducing task completion time and promoting collaborative inquiry. The potential disadvantages of using AR in physics teaching are mainly related to the shortcomings of software and hardware technologies (e.g., camera freeze, visualization delay) and extraneous cognitive load (e.g., paying more attention to secondary details than to constructing target knowledge).","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139252770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A physical point of view on the arithmetic and geometric mean inequality 从物理角度看算术和几何平均不等式
4区 教育学
European Journal of Physics Pub Date : 2023-11-09 DOI: 10.1088/1361-6404/ad0b3b
Michele Modestino, Roberto De Luca, Orazio Faella
{"title":"A physical point of view on the arithmetic and geometric mean inequality","authors":"Michele Modestino, Roberto De Luca, Orazio Faella","doi":"10.1088/1361-6404/ad0b3b","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0b3b","url":null,"abstract":"Abstract We propose a simple experiment designed to justify the arithmetic and geometric mean inequality by means of the laws of thermodynamics. The experiment consists in measuring the entropy variation ΔS in the thermodynamic irreversible process of cooling a metal in water. By considering the metal and water as a single isolated system, the arithmetic and geometric theorem is seen to hold by noticing that ΔS is positive for this irreversible transformation. These interdisciplinary activities may be used to reinforce basic concepts in thermodynamics in high school or first-year college students.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135192019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Spherical Version of Feynman's Static Field Momentum Example 费曼静态场动量例子的球面版本
4区 教育学
European Journal of Physics Pub Date : 2023-11-08 DOI: 10.1088/1361-6404/ad0aa4
Oliver Davis Johns
{"title":"A Spherical Version of Feynman's Static Field Momentum Example","authors":"Oliver Davis Johns","doi":"10.1088/1361-6404/ad0aa4","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0aa4","url":null,"abstract":"Abstract The Feynman demonstration that electromagnetic field momentum is real-even
for static fields-can be made more pedagogically useful by simplifying
its geometry. Instead of Feynman's disk with charged balls on its
surface, this article uses the geometry of a hollow non-conducting
sphere with uniform surface charge density. With only methods available
in a typical upper-division electrodynamics course, the initial field
angular momentum and the final mechanical angular momentum can then
be calculated in closed form and shown to be equal.
","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135340371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diffraction patterns of Optical Discs under Far-field condition 远场条件下光盘的衍射图样
4区 教育学
European Journal of Physics Pub Date : 2023-11-08 DOI: 10.1088/1361-6404/ad0aa1
Zhuofan Cai, Shijiang Chen, Boyang Deng, Shuqi Liu, Wei Zhao, Zengming Zhang
{"title":"Diffraction patterns of Optical Discs under Far-field condition","authors":"Zhuofan Cai, Shijiang Chen, Boyang Deng, Shuqi Liu, Wei Zhao, Zengming Zhang","doi":"10.1088/1361-6404/ad0aa1","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0aa1","url":null,"abstract":"Abstract When optical disks are illuminated, bright-colored lines can often be observed on the surface of them. Starting from the oblique incident grating diffraction model, this paper analyzes the physical mechanism behind the appearance of these colored lines and provides the coordinate expression of the location of the colored lines on the optical disc under the far-field condition. The wavelength distribution of the colored lines on the optical disc under white light illumination is also given by the wave vector relationship of the diffraction process. To verify the theoretical analysis results, an experimental apparatus was designed and constructed to measure the position and color of the colored lines. The experimental data, analyzed through Gaussian process regression and direct comparison, demonstrates a good consistency with the theoretical analysis results.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135340792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
EMF Revisited EMF重新审视
4区 教育学
European Journal of Physics Pub Date : 2023-11-08 DOI: 10.1088/1361-6404/ad0a9e
Art Davis
{"title":"EMF Revisited","authors":"Art Davis","doi":"10.1088/1361-6404/ad0a9e","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0a9e","url":null,"abstract":"Abstract This paper was inspired by a recent publication by Redˇ z´ ıc[1] which threw into bold relief the differences between the way Maxwell viewed current and the way Lorentz visualized it. We make the assumption that for a circuit of laboratory dimensions current (and charge perturbation effects in general) can be assumed to propagate instaneously around the loop. Our second fundamental assumption is the commonly accepted one that E is the force per unit charge on a stationary charge. We use these facts to make the usual definition of electromotive force more rigorous and to derive the Lorentz force formula.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135340793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low-cost measurements of the “resonant” wavelengths reflected by a compact disc under skimming light rays 低成本测量在掠光光线下由光盘反射的“共振”波长
4区 教育学
European Journal of Physics Pub Date : 2023-11-08 DOI: 10.1088/1361-6404/ad0aa0
Marco Di Mauro, Pasquale Onorato, L M Gratton, Roberto De Luca, Oriana Fiore, Lars Gislén, Adele Naddeo
{"title":"Low-cost measurements of the “resonant” wavelengths reflected by a compact disc under skimming light rays","authors":"Marco Di Mauro, Pasquale Onorato, L M Gratton, Roberto De Luca, Oriana Fiore, Lars Gislén, Adele Naddeo","doi":"10.1088/1361-6404/ad0aa0","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0aa0","url":null,"abstract":"Abstract We demonstrate the construction and utilization of an affordable apparatus using readily available materials to accurately measure in a quantitative manner the wavelengths reflected by a compact disc (CD) under skimming light rays. In fact, only a limited number of wavelengths can be revealed when light rays from a white lamp are directed at a CD (or a DVD) in a manner that specifically selects the rays that graze the surface of the horizontally held disc. We compare the results with the ones obtained with a commercial spectrometer, the results are in good agreement among them and with the theoretical predictions.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135340791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hands-on visualization of the effect of fictitious forces with a laser pointer 用激光笔动手可视化虚拟力的效果
4区 教育学
European Journal of Physics Pub Date : 2023-11-08 DOI: 10.1088/1361-6404/ad0aa3
Benito Vázquez-Dorrı́o, Angel Paredes, Miguel Angel Queiruga-Dios
{"title":"Hands-on visualization of the effect of fictitious forces with a laser pointer","authors":"Benito Vázquez-Dorrı́o, Angel Paredes, Miguel Angel Queiruga-Dios","doi":"10.1088/1361-6404/ad0aa3","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0aa3","url":null,"abstract":"Abstract Inertial motion looks like accelerated motion when observed from the point of view of a non-inertial reference frame. A non-inertial observer can then describe the trajectories by introducing fictitious forces, like the centrifugal and Coriolis forces, that arise from the coordinate change between reference frames. This well-known fact is part of the typical Physics syllabus for undergraduate scientists and engineers, and a number of interesting classroom demonstrations have been discussed in the literature. We present a complementary possibility for the visualization of the effect of fictitious forces by shining a blue laser beam on a rotating platform covered with a phosphorescent vinyl sheet. The laser can be moved in order to simulate inertial motion in the laboratory frame for the trajectory of the laser spot. This gets immediately imprinted in the rotating phosphorescent material resulting in non-inertial trajectories that can be readily observed and compared to the dynamics governed by fictitious forces. Since friction is not considered, this hands-on activity can be considered as a direct demonstration of the effect of pure fictitious forces in and out the classroom. The approach is simple, inexpensive, fast and non-destructive, and can therefore be very convenient for active lecture demonstrations or individual activities of students. We also describe some educational possibilities of how to use the procedure in the classroom or in the laboratory.
","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135341012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Doppler effect in the ripple tank: further experiments with a moving source 波纹槽中的多普勒效应:移动源的进一步实验
4区 教育学
European Journal of Physics Pub Date : 2023-11-08 DOI: 10.1088/1361-6404/ad0aa2
Michele D'Anna, Tommaso Corridoni, Stefano Sposetti, Federico Corni
{"title":"Doppler effect in the ripple tank: further experiments with a moving source","authors":"Michele D'Anna, Tommaso Corridoni, Stefano Sposetti, Federico Corni","doi":"10.1088/1361-6404/ad0aa2","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0aa2","url":null,"abstract":"Abstract In this paper we extend some recent works about Doppler effect in surface waves on water. We improve the experimental set up exploring several situations: source in motion with constant velocity and receiver at rest, source at rest and receiver in motion with constant velocity, as well as both source and receiver in motion. Thereby we produce fractional frequency changes of the order of 40-50%, far larger than those obtained by more traditional sound experiments. The experimental set-up, the data collection and the data analysis also allow to highlight some aspects relevant from a didactic point of view, in particular the experimental results clearly show the nonlinearity of the Doppler shift with the moving source velocity.
","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135340962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"教育学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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