插图使用的探索和创新--浅谈自由落体频闪照片在教学中的应用

插图是教材的重要组成部分，不仅量多，[如高一教材(人民教育出版社2003年6月第1版)共一百五十多页，插图就有两百多幅]，而且内容丰富；它们分别展示了实验典型器材，记录了实验结果，分析了物理现象或过程，反映了物理知识在生产、生活、科技、实际中的应用，介绍了重要物理史料等等，在物理教学中起到了不可替代的作用．因此如何充分合理利用插图，     

浅谈高考“物理分析”试题的解答方法

近年来北京、福建等地的高考物理试题中出现了一类“物理分析”特色试题,这类试题的特点是高中生无法或难以直接解答,只有根据所学的物理知识,通过一定的分析、判断来确定问题解的合理性或正确性．对于这类问题往往要进行合理地近似处理,     

电磁感应习题分类例析

电磁感应是高中物理中的一个重要知识点，也是高考的热点，本文对这类综合题进行分类例析．     

用好插图事半功倍--浅谈"机械波"的教学

物理插图能起到形象地再现物理情景，辅助解释物理原理的作用．现行人教版物理第二册（必修加选修），第十章“机械波”第一节的知识“波的形成和传播”是该章的重点，本节插图10-5“横波的形成”又是该节的教学重点．这幅插图用得好，直接为后面的波的图像教学及用图像解决问题打下坚实的基础．     

2006年高考信息给予题赏析

近年来，高考物理试卷中出现了一种新题型——信息给予题，这类考题立意高、情景新、选材活，具有鲜明的时代气息，成为高考试题中一道亮丽的风景线．下面笔者就今年全国各地高考理综试题中的信息给予题进行赏析．     

工科大学物理教材中插图的改革问题

本文探讨了工科大学物理教材中插图的改革问题，研究了当今国内流行的工科物理教材中插图的现状，指出了美国同类教材插图的特点及值得我们借鉴的地方．并提出了在我国教材插图的改革中值得注意的问题．     

高考物理实验试题分析及对教学的启示

物理学是一门以实验为基础的科学．物理规律的发现和物理理论的建立都必须以严格的物理实验为基础，并受到实验的检验．因此，实验题是高考试卷中的重要组成部分，是对学生观察能力、分析综合能力、设计能力等综合素质进行考查的一个必要命题环节．而在每年的高考试卷中，考生在实验题部分得分率不高，这反映出在平时的教学中，实验还是比较薄弱的环节．随着新一轮基础教育课程改革的全面推进，探究性学习的兴起，最近几年高考物理实验题所占的比重增加，对能力的要求越来越高，试题更加灵活，对考生们的挑战性也越发增强．笔者就近几年的高考物理实验题做了简要的分析，意在对教学有所启迪．     

图象法的应用

用图象来解决物理问题是高中物理解题的一种方法，通过图象能直观的反映某一物理量随另一物理量变化的定量或定性的关系，从图象中获取所需的信息也是高考的热点．可以说，图象在揭示物理规律或物理量之间关系方面与函数解析式具有同样重要的地位．本文以几类典型应用来简单论述物理图象在解题中的作用。     

工科大学物理教材中插图的改革问题

本文探讨了工科大学物理教材中插图的改革问题，研究了当今国内流行的工科物理教材中插图的现状，指出了美国同类教材插图的特点及值得我们借鉴的地方，并提出了在我国教材插图的改革中值得注意的问题．     

浅谈图象法在电磁感应问题中的运用

用图象描述物理过程，具有直观、简明的优点，是物理学中一种重要的方法．从近几年的高考试题来看，电磁感应中的图象问题是高考常考的题型之一，而题目大体上可以分为2类：由给定的电磁感应过程选出或画出正确的图象；或由给定的有关图象分析电磁感应过程，求解     

关于"太阳在银河系中所受引力与到银心距离r的关系"的讨论

讨论了银道面内的引力场强分布和太阳在银河系中所受引力与到银心距离r的关系，指出引力场强g并不是与r的平方成反比，这是由于银河系的大小和形状不能忽略造成的．强调了万有引力定律的适用条件．     

On the predictability of the positions of the convergence zones in the ocean

The disagreement between the experimental and calculated positions of the first convergence zone are known from many publications. The most probable cause for such a disagreement, namely, the incorrect specification of the input data for the calculations, is considered. The lack of simultaneity between the hydrological surveys of the region and the acoustic experiments is emphasized. The experimental data obtained by the author in five ocean regions are presented. These data characterize the diurnal variability of the distance from the source to the nearest boundary of the convergence zone. The relations proposed by different researchers for calculating the sound speed from the temperature, salinity, and hydrostatic pressure are analyzed. It is shown that these relations lead to a substantial difference in the estimated depth dependence of the hydrostatic gradient of the sound speed. The position of the first convergence zone is calculated for the propagation conditions determined by vertical temperature and salinity profiles with the subsequent recalculation of these profiles into sound speed profiles by using eight different formulas known from the literature. It is shown that different formulas lead to different values of the distance to the first zone; this difference is substantially greater than that between the calculations and experiment. The necessity of improving the recalculation relations in view of the experimental data on sound propagation in natural oceanic waveguides, including the data on the actual positions of the convergence zones, is emphasized.     

On the calculation of the bremsstrahlung in the region of the plasma frequency

On the basis of the classical theory of radiation produced in incomplete Coulomb interaction, a formula is derived for the coefficient of the bremsstrahlung of fully ionized plasma. In the region of rectilinear approximation a comparison is made with the results of the quantum formula derived from the Born approximation. Furthermore, the influence of dispersion upon the emission coefficient is taken into account; some relations for the region of dispersion are given.     

Dependence of the Intensity of the Spectral Lines and the Composition of the Sample and the Plasma Parameters of the Unipolar Arc

The investigation was made of the dependence of the intensity of Tl, Ga, Mo, Mg, Mn, Sn, Bi, Ni, Zn, Pt and Au spectral lines and the plasma parameters (temperature T, electron concentration n_e, degree of 6 ionnization α) from concentration of lithium additive.     

Extracting the wavefunction of the LSP at the LHC

We consider associated production of squarks and gluinos with the lightest supersymmetric particle (LSP), or states nearly degenerate in mass with it. Though sub-dominant to pair production of color SU(3)-charged superpartners, these processes are directly sensitive to the wavefunction composition of the lightest neutralinos. Exploiting event-shape variables - including some introduced here for the first time - we are able to identify the composition of the LSP by selecting events involving a single high-pT jet recoiling against missing transverse energy. We illustrate the proposed technique on a set of benchmark cases and propose methods for applying these results in more realistic experimental environments.     

Set the controls for the heart of the Sun

In this paper we describe experiments conducted with high-power lasers that are attempting to replicate, for a very short time and in miniature, conditions found in the Sun. Experiments to date have reached conditions in the outer part of the Sun. To reach the Sun's centre requires compression of material to very much greater than solid density and heating to over ten million degrees. To achieve this, a new class of experiments and a new generation of high-power lasers are required.     

On the Question of the Source of the Apokamp

Technical Physics - The object of this work is the apokamp—a new type of plasma jet, which is formed from a bright offshoot emerging at the bending point of a channel of a high-voltage...