职校物理教学中开展课题研究活动的思考

职业学校的物理教学应该密切与专业结合,充分调动学生学习积极性,培养学生的解决问题的能力,在其物理教学中尝试"物理课题研究活动"是指以生活、社会与自然中的问题和现象为研究专题,结合学生的专业特点,借助现代信息技术,收集资料,分析处理信息,运用物理知识解决相关问题,开展类似科学探究的一种综合性学习活动.     

用"等价排除法"检测学生想象能力的尝试

学生的物理想象能力和物理知识有着密切的联系,但二者也有不同.在教学中,必须随时了解和掌握学生物理想象能力的情况.为此笔者运用“等价排除法”对学生的物理想象能力进行了多次测试,并进行对比和分析,总结如下.1等价排除法 通常测试方法对于能力测试而言,有两点明显不足,一是能力和知识混在一起;二     

在物理习题教学中提高学生思维能力的策略研究

在高中物理教学中,习题教学是整个物理教学的一个重要环节,是学生运用所学知识解决实际问题的初步实践.它对学生深入理解物理知识,培养学生的思维能力都具有不可替代的作用.但是常见的现象是在习题教学中过多地强调知识、规律,方法的渗透很少,更别说是思维能力的培养.那么如何在物理习题教学中提高学生思维能力,笔者结合自己的教学实践,提出了以下三项策略:选择易错习题,提高学生的推理能力;暴露错误知识,提高学生的判断能力;挑战思维定势,培养学生的创新思维.     

初中物理跨学科融合教学的实践研究

2022年版义务教育物理课程标准中提到,要强化学科内知识整合,统筹设计“跨学科实践”主题学习,旨在发展学生跨学科运用知识的能力、分析和解决问题的综合能力、动手操作的实践能力.由此可见,跨学科融合教学已成为物理教师急需研究的一个重要课题,从跨学科联系、思维、器具、情感4个方面出发,浅谈物理学科如何与其他学科进行有效的融合教学,目的在于激发学生学习兴趣,提高学生应用物理知识的能力,培养学生创新思维和爱国情怀.     

浅谈物理教学中逆向思维能力的培养

在物理教学中,许多重要的物理概念和定律的引入,习题的分析与解答常常要通过运用逆向思维.所谓逆向思维,也就是要从已知事物的相反方向进行思考问题,从而使问题获得创造性的解决.另外通过逆向思维训练,还可以培养学生的创新意识和对知识的变通能力.培养学生逆向思维能力的途径是结合知识教学对学生进行思维方式及方法的教育,笔者认为,在我们的教学工作中,应对学生加强逆向思维能力的培养,一旦让习惯于正向思维的同学获得逆向思维的能力,将使他们独辟蹊径,在别人没有注意到的地方有所发现,从而致胜于出入意料!     

物理教学中的实验教学形式

以实验为基础是物理教学的最基本特征.在课堂教学中,充分利用实验带来的直观效应,激发学生的学习积极性.激励主动参与,帮助学生形成概念,巩固和理解基本知识,通过实验培养学生综合运用知识的能力、动手、动脑的能力、创造能力及分析问题、解决问题等各方面的能力,提高综合素质,是我们的目的所在.本文拟对物理教学中实验教学的形式作一些探讨.     

浅议初中物理解题能力的培养

人们普片认为物理概念的理解程度,最能反应一个学生的智力高低,在教学实践中我们似乎也有这样的感觉,因为物理概念与公式是科学家在反复实验中诞生的,对于刚接触物理知识的初中生只有反复运用才能初步理解,因此,加强学生解题能力的训练,是运用知识解决问题的需要,是理解概念培养发展智力的需要,也是提高学生实践能力与创新能力的需要.     

浅论新课改下高中物理实验教学

随着新课程改革的逐渐深入,广大教育工作者对于物理教学的认识又上升到了新的高度,当前,怎样突出学生在教学过程中的主体地位,增强学生对理论知识的实践性和运用物理知识的能力,是新课改对物理教学提出的新的要求.作为一门重要的自然学科,物理教学过程中更加注重让学生通过实际操作来学习知识,只有这样才可以提升学生的物理学习兴趣,提高学生的物理知识水平.本文结合笔者实际教学研究经验,就新课改背景下高中物理实验教学提出了几点建设性的意见.     

谈谈物理实验教学的设计和教具的制作

一、物理实验教学的目的意义物理实验教学,一方面应该按教学目的要求造成一个特定的物理环境,让学生置身于这个环境中,引导学生手脑并用和运用一切感官,通过思考,辨别物理现象中的主次、真假,从中形成正确的物理概念,认识和理解物理规律;另方面是培养学生利用实验方法浊立研究物理问题,从而获得新知识和把知识应用于实践的创造能力.     

“ 延迟判断”在高中物理教学中的应用

物理教学中要强调学生的主体性. 运用“ 延迟判断”策略, 以学生为主体, 注重物理知识的形成过程和 问题的分析过程, 引导学生自主建构物理知识, 可有效转变学习方式, 促进了知识深刻理解, 提高思维品质和问题解 决能力     

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...