图象在物理教学中的作用

利用图象研究物理规律，具有形象直观，物理动态过程清晰等优点．它可以培养学生分析和运用图象解决问题的能力，对帮助学生认识物理规律，理解物理概念都是十分必要的．     

运用图象分析解决物理问题

图象是分析解决物理问题的重要手段。1 运用图象的交点物理图象中的“点”:一是图线与坐标轴的交点,有时表示物理过程中的转折点,如:υ-t图与横轴的交点是运动方向的变化点。振动图象与横轴的交点表示质点过平衡位置,相应的位移、加速度方向都发生变化。有时反映物理过程中的某些特定状态,如:     

利用运动图象巧解物理问题

运动图象（包括v-t，s-t图象）是描述物体运动规律的重要方法之一，它具有直观，形象的特点。利用图象分析问题，往往会收到简便快捷的解题效果，因此在教学中应对运动图象给予足够的重视，充分发挥图象的作用，为学生学习和提高广开思路．     

关于电介质的物理图象及其应用的讨论

给出一种新的电介持物理图象，并阐明电介质三种物理图象的意义以及它们的区别与联系。     

直角坐标系在物理教学中的应用

1 直角坐标系的应用直角坐标系在物理中应用广泛,如v-t图象,振动图象,交流电流随时间变化i-t关系等. 2 给定坐标的利用首先要认清图中横轴、纵轴各表示的物理量,再根据给定的图线,分析函数关系求解. 例1、如图是沿直线运动的质点m的v-t图象,求质点头10s内通过的路程.     

借助物理图象加强过程分析

在分析和解决物理问题时,利用图象展示较为复杂的运动过程,其直观性和整体性十分明显,会使学生易于分清运动的各个不同阶段,找出各阶段的特有属性及相互间的联系,把握运动变化的临界点以及运动过程的总体情况.     

学会应用图象解决物理问题

中学物理中常用的图象都是以平面直角坐标系描述的，在应用图象分析问题时，应注意以下4个方面。     

角动量的物理图象

根据角运量的定义，结合图形、分析和讨论角动量计算中各项以及各量的深刻意义，建立角动量的物理图象，明确对点的角动量和对轴的角动量的关系。     

注意康普顿效应教学中的物理方法

模型法、比较法、近似法讨论康普顿效应的教学。会呈清晰的物理图象，激发积极思维，提高学生的素质能力。     

应用图象法进行物理教学

在物理学中，要使学生深入理解基本概念和基本规律．并运用它们正确地解释现象，分析和计算问题．教师必须设计切实可行的教学方法．而应用物理图象的直观性和运动性对讲清物理规律的内涵和外伸，导出某些推论，以及学生理解概念，掌握物理意义。加强印象开阔思路，解决某些具体问题等方面都有独到之处．下面以几则教学实例浅谈教学体会．     

Physics Without Physics

David Finkelstein was very fond of the new information-theoretic paradigm of physics advocated by John Archibald Wheeler and Richard Feynman. Only recently, however, the paradigm has concretely shown its full power, with the derivation of quantum theory (Chiribella et al., Phys. Rev. A 84:012311, 2011; D’Ariano et al., 2017) and of free quantum field theory (D’Ariano and Perinotti, Phys. Rev. A 90:062106, 2014; Bisio et al., Phys. Rev. A 88:032301, 2013; Bisio et al., Ann. Phys. 354:244, 2015; Bisio et al., Ann. Phys. 368:177, 2016) from informational principles. The paradigm has opened for the first time the possibility of avoiding physical primitives in the axioms of the physical theory, allowing a re-foundation of the whole physics over logically solid grounds. In addition to such methodological value, the new information-theoretic derivation of quantum field theory is particularly interesting for establishing a theoretical framework for quantum gravity, with the idea of obtaining gravity itself as emergent from the quantum information processing, as also suggested by the role played by information in the holographic principle (Susskind, J. Math. Phys. 36:6377, 1995; Bousso, Rev. Mod. Phys. 74:825, 2002). In this paper I review how free quantum field theory is derived without using mechanical primitives, including space-time, special relativity, Hamiltonians, and quantization rules. The theory is simply provided by the simplest quantum algorithm encompassing a countable set of quantum systems whose network of interactions satisfies the three following simple principles: homogeneity, locality, and isotropy. The inherent discrete nature of the informational derivation leads to an extension of quantum field theory in terms of a quantum cellular automata and quantum walks. A simple heuristic argument sets the scale to the Planck one, and the currently observed regime where discreteness is not visible is the so-called “relativistic regime” of small wavevectors, which holds for all energies ever tested (and even much larger), where the usual free quantum field theory is perfectly recovered. In the present quantum discrete theory Einstein relativity principle can be restated without using space-time in terms of invariance of the eigenvalue equation of the automaton/walk under change of representations. Distortions of the Poincaré group emerge at the Planck scale, whereas special relativity is perfectly recovered in the relativistic regime. Discreteness, on the other hand, has some plus compared to the continuum theory: 1) it contains it as a special regime; 2) it leads to some additional features with GR flavor: the existence of an upper bound for the particle mass (with physical interpretation as the Planck mass), and a global De Sitter invariance; 3) it provides its own physical standards for space, time, and mass within a purely mathematical adimensional context. The paper ends with the future perspectives of this project, and with an Appendix containing biographic notes about my friendship with David Finkelstein, to whom this paper is dedicated.     

Chinese Physics C(Formerly High Energy Physics and Nuclear Physics)

<正>Monthly,founded in 1977Published monthly in hard copy by Science Press and online by the Institute of High Energy Physics of the Chinese Academy of Sciences(domestic)and by IOP Publishing,Temple Circus,Temple Way,Bristol BS1 6HG,UK(international).     

Physics Needs Philosophy. Philosophy Needs Physics

Contrary to claims about the irrelevance of philosophy for science, I argue that philosophy has had, and still has, far more influence on physics than is commonly assumed. I maintain that the current anti-philosophical ideology has had damaging effects on the fertility of science. I also suggest that recent important empirical results, such as the detection of the Higgs particle and gravitational waves, and the failure to detect supersymmetry where many expected to find it, question the validity of certain philosophical assumptions common among theoretical physicists, inviting us to engage in a clearer philosophical reflection on scientific method.     

物理新闻和动态

中国物理学会2006年秋季学术会议简讯9月15日上午,中国物理学会2006年秋季学术会议(CPS2006FallMeeting)在清华大学礼堂拉开帷幕.来自中国大陆和香港的上百个科研单位和高等院校的千余名代表参加了大会开幕式暨特邀学术报告会.开幕式上,2006年秋季学术会议地方组委会主席,清华大学物理系王青教授首先代表清华大学物理系向各位代表表示了真诚欢迎.秋季学术会议大会组委会主席、中科院基础科学局局长张杰院士向与会代表介绍了秋季会议的发展概况,对2006年秋季会议的筹备工作进行了简要介绍并给予了充分肯定.清华大学校长、中国物理学会费米…