发布求助
文献互助 智能选刊 最新文献

European Journal of Physics最新文献

筛选
英文 中文
Mass formulas for individual black holes in merging binaries 合并双星中单个黑洞的质量公式
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2024-01-16 DOI: 10.1088/1361-6404/ad1531
Zeynep Tugce Ozkarsligil, Bayram Tekin
{"title":"Mass formulas for individual black holes in merging binaries","authors":"Zeynep Tugce Ozkarsligil, Bayram Tekin","doi":"10.1088/1361-6404/ad1531","DOIUrl":"https://doi.org/10.1088/1361-6404/ad1531","url":null,"abstract":"We give formulas for individual black hole masses in a merger, by using Newtonian physics, in terms of the three measured quantities in the detector: the initial wave frequency <italic toggle=\"yes\">f</italic>\u0000<sub>1</sub>, the maximum detected frequency (chirp frequency) <italic toggle=\"yes\">f</italic>\u0000<sub>2</sub>, and the time elapse <italic toggle=\"yes\">τ</italic> between these two frequencies. Newtonian gravity provides an excellent pedagogical tool to understand the basic features of gravitational wave observations, but it must be augmented with the assumption of gravitational radiation from General Relativity for accelerating masses as there is no gravitational wave Newtonian gravity. The simplest approach would be to consider a binary system of two non-spinning masses (two black holes) circling their common center of mass. All the computations can be done within Newtonian physics, but the General Relativistic formula for the power carried by gravitational waves is required in this scheme. It turns out there is a subtle point: for the consistency of this simple, yet pedagogical computation, taking the lowest order power formula from General Relativity leads to complex individual masses. Here we remedy this problem and suggest a way to write down an average power formula coming from perturbative General Relativity.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139509867","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
The Coriolis effect and coupled oscillations in a rotating swings amusement ride 旋转秋千游乐设施中的科里奥利效应和耦合振荡
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2024-01-15 DOI: 10.1088/1361-6404/ad1ed6
J. Schilder, Ann-Marie Pendrill
{"title":"The Coriolis effect and coupled oscillations in a rotating swings amusement ride","authors":"J. Schilder, Ann-Marie Pendrill","doi":"10.1088/1361-6404/ad1ed6","DOIUrl":"https://doi.org/10.1088/1361-6404/ad1ed6","url":null,"abstract":"\u0000 Rotating swings are found in many different versions in parks around the world. They are beautiful examples of the equivalence between gravitational and inertial mass: Empty swings and swings with heavy adults hang at the same angle to the vertical. However, sometimes you may notice empty swings moving in a different pattern in an outdoor ride, where wind can induce additional motion, sideways or back to front, in addition to any oscillations caused by a tilted carousel head. This paper focuses on oscillations for the simpler case of a non-tilting roof. Even for this case, the oscillating motion is found to be complicated by the Coriolis effect, which leads to a gyroscopic coupling between sideways oscillations and back-to-front oscillations. This coupling is illustrated for a few special cases.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139623111","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
Berry phase of spin-one system in a rotating electric field 旋转电场中自旋一系的贝里相
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2023-12-29 DOI: 10.1088/1361-6404/ad1398
Abdaljalel Alizzi, Zurab K Silagadze, Artem Uskov
{"title":"Berry phase of spin-one system in a rotating electric field","authors":"Abdaljalel Alizzi, Zurab K Silagadze, Artem Uskov","doi":"10.1088/1361-6404/ad1398","DOIUrl":"https://doi.org/10.1088/1361-6404/ad1398","url":null,"abstract":"We consider in detail how the Berry phase arises in a rotating electric field in a model system with spin one. The goal is to help the student who first encountered this interesting problem, which is fraught with some subtleties that require attention in order not to go astray.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139095539","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
Modelling assisted tunneling on the Bloch sphere using the Quantum Composer 利用量子合成器建立布洛赫球上的辅助隧道模型
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2023-12-29 DOI: 10.1088/1361-6404/ad139a
Jonas Bley, Vieri Mattei, Simon Goorney, Jacob Sherson, Stefan Heusler
{"title":"Modelling assisted tunneling on the Bloch sphere using the Quantum Composer","authors":"Jonas Bley, Vieri Mattei, Simon Goorney, Jacob Sherson, Stefan Heusler","doi":"10.1088/1361-6404/ad139a","DOIUrl":"https://doi.org/10.1088/1361-6404/ad139a","url":null,"abstract":"The Bloch sphere representation is a geometric model for all possible quantum states of a two-level system that can be used to describe the time dynamics of a qubit. As explicit application, we consider the time dynamics of a particle in a double-well potential. In particular, we adopt a recent method for off-resonant excitations, the so-called SUPER principle (Swing Up of the quantum emitter population) driven by periodic electromagnetic fields, to the context of quantum tunnelling. We show that the tunnelling probability can be enhanced significantly when an appropriate oscillation of the potential height is introduced. Driven by a collaborative approach we call <italic toggle=\"yes\">educator-developer dialogue</italic>, an updated version of the software Quantum Composer is presented. For educational purposes, we map the two lowest energy states of the 1D-Schrödinger equation to the Bloch sphere representation, leading to a rather clear and intuitive physical picture for the pertinent time dynamics.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139096195","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
Reply to Comment on ‘Covariant formulation of electrodynamics in isotropic media’ 回复关于 "各向同性介质中电动力学的共变公式 "的评论
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2023-12-26 DOI: 10.1088/1361-6404/ad0dea
Palash B Pal
{"title":"Reply to Comment on ‘Covariant formulation of electrodynamics in isotropic media’","authors":"Palash B Pal","doi":"10.1088/1361-6404/ad0dea","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0dea","url":null,"abstract":"This note contains my response to the comment written by J Franklin on my paper ‘Covariant formulation of electrodynamics in isotropic media’.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139054611","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
The origins of physics words 物理学词汇的起源
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2023-12-15 DOI: 10.1088/1361-6404/ad0f9b
P-M Binder
{"title":"The origins of physics words","authors":"P-M Binder","doi":"10.1088/1361-6404/ad0f9b","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0f9b","url":null,"abstract":"The predominantly Greek and Latin etymological roots that form the core introductory physics vocabulary are identified. They number slightly over 260. Words with other origins and common suffixes are also listed. Definitions are also given for a group of words that have caused difficulties for students in physics classes, contrasting meanings that are, and are not related to physics. A reverse dictionary of roots, showing the individual origin of about 400 words in all areas of introductory physics is presented in an appendix. The information presented here can inform and assist in developing a physics lexicon in minority and indigenous languages and to create classroom moments that connect the origin of words with everyday life.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138685252","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
Comment on ‘Covariant formulation of electrodynamics in isotropic media’ 关于 "各向同性介质中电动力学的共变公式 "的评论
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2023-12-13 DOI: 10.1088/1361-6404/ad0de9
Jerrold Franklin
{"title":"Comment on ‘Covariant formulation of electrodynamics in isotropic media’","authors":"Jerrold Franklin","doi":"10.1088/1361-6404/ad0de9","DOIUrl":"https://doi.org/10.1088/1361-6404/ad0de9","url":null,"abstract":"A recent paper Pal (2022 <italic toggle=\"yes\">Eur. J. Phys.</italic>\u0000<bold>43</bold> 015204) puts into covariant form an extension of relativistic classical electromagnetism from free space to a linearly polarizable medium. The paper is based on the assumption that the relativistic tensor, <italic toggle=\"yes\">F</italic>\u0000<sup>\u0000<italic toggle=\"yes\">μ</italic>\u0000<italic toggle=\"yes\">ν</italic>\u0000</sup>, which is a tensor in free space, will also be a tensor in a linear medium. Pal constructs a proposed covariant formulation that gives <inline-formula>\u0000<tex-math>\u0000<?CDATA ${F}^{mu nu }$?>\u0000</tex-math>\u0000<mml:math overflow=\"scroll\"><mml:msup><mml:mrow><mml:mi>F</mml:mi></mml:mrow><mml:mrow><mml:mi>μ</mml:mi><mml:mi>ν</mml:mi></mml:mrow></mml:msup></mml:math>\u0000<inline-graphic xlink:href=\"ejpad0de9ieqn1.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula> for a medium moving with constant velocity, <bold>v</bold>, in terms of <italic toggle=\"yes\">F</italic>\u0000<sup>\u0000<italic toggle=\"yes\">μ</italic>\u0000<italic toggle=\"yes\">ν</italic>\u0000</sup> for the medium at rest. However, although <italic toggle=\"yes\">F</italic>\u0000<sup>\u0000<italic toggle=\"yes\">μ</italic>\u0000<italic toggle=\"yes\">ν</italic>\u0000</sup> has been proven to be a relativistic tensor in free space, we show that it is not a tensor in a linear medium. This means that the covariant extension proposed by Pal fails.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138685133","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
Fraunhofer approximation of Fresnel integrals 菲涅尔积分的弗劳恩霍夫近似值
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2023-12-13 DOI: 10.1088/1361-6404/ad1530
K. Dupraz, Guillaume Dupuis, A. Martens, J. Rax, F. Zomer
{"title":"Fraunhofer approximation of Fresnel integrals","authors":"K. Dupraz, Guillaume Dupuis, A. Martens, J. Rax, F. Zomer","doi":"10.1088/1361-6404/ad1530","DOIUrl":"https://doi.org/10.1088/1361-6404/ad1530","url":null,"abstract":"\u0000 A method to derive the Fraunhofer diffraction integral by making use of the theory of distributions is presented. With respect to standard textbooks, the pedagogical benefit of this method is that it uniquely uses the far field approximation of the Fresnel diffraction integral. An operator representation of Fresnel diffraction is also derived.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139004554","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 pedagogical approach to introducing the honeycomb lattice gauge theory 介绍蜂巢格规理论的教学方法
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2023-12-08 DOI: 10.1088/1361-6404/ad1397
Yi-Fen Zhao, Fei-Jie Huang
{"title":"A pedagogical approach to introducing the honeycomb lattice gauge theory","authors":"Yi-Fen Zhao, Fei-Jie Huang","doi":"10.1088/1361-6404/ad1397","DOIUrl":"https://doi.org/10.1088/1361-6404/ad1397","url":null,"abstract":"\u0000 A pedagogical approach to introducing the honeycomb lattice gauge theory is presented. Lattice gauge theory, which is an important theory for understanding strongly correlated systems, is a significant topic covered in the quantum field theory course for graduate students. Typically, quantum field theory textbooks introduce lattice gauge theory using the square lattice. However, beginners often find it challenging to grasp such an abstract theory only through the example of the square lattice. In this paper, we introduce lattice gauge theory using an alternative lattice - the honeycomb lattice. By comparing the differences between honeycomb and square lattice gauge theories, we highlight the fundamental principles of lattice gauge theory. This pedagogical approach will assist students in gaining a fresh perspective on grasping lattice gauge theory.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138588345","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
An educational model of the Deutsch algorithm for secondary school 中学德语算法教育模式
IF 0.7 4区 教育学
European Journal of Physics Pub Date : 2023-12-08 DOI: 10.1088/1361-6404/ad1399
C. Sutrini, G. Zuccarini, M. Malgieri, Maria Bondani, Chiara Macchiavello
{"title":"An educational model of the Deutsch algorithm for secondary school","authors":"C. Sutrini, G. Zuccarini, M. Malgieri, Maria Bondani, Chiara Macchiavello","doi":"10.1088/1361-6404/ad1399","DOIUrl":"https://doi.org/10.1088/1361-6404/ad1399","url":null,"abstract":"\u0000 In this paper we present the outline of an educational path to introduce a crucial historical turnpoint of quantum information research – namely the Deutsch algorithm – to secondary school students. We discuss a basic elementarization strategy allowing students to single out and focus on the individual features of quantum mechanics involved in the different steps of the algorithm information processing phase, which can potentially be useful for the educational reconstruction of other algorithms and protocols. The sequence includes the experimental realization on the optical bench of an analogue of the Deutsch algorithm, working with classical coherent light. The educational path was tested both in curricular and out-of-school settings, and preliminary results will be discussed.","PeriodicalId":50480,"journal":{"name":"European Journal of Physics","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138588007","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信