首先对全国部分地区大学生物理竞赛中较常考核的知识点的占比进行统计，然后重点剖析其中8个考核热点。

本文首先对全国部分地区大学生物理竞赛中波动与光学试题所占的比例、各知识点的分布情况进行统计、分析,然后对波动与光学试题的解题方法、试题特点进行剖析,最后概括性地介绍旋转矢量法的应用.

本文首先对全国部分地区大学生物理竞赛中近代物理试题所占的比例、各知识点的分布情况进行统计,然后对近代物理试题的特点进行剖析.

首先对全国部分地区大学生物理竞赛中热学试题所占的比例进行统计，然后分析热学试题中各知识点的分布情况，最后就几个典型的热学试题进行剖析。

首先对全国部分地区大学生物理竞赛中电磁学试题所占的比例进行统计，然后分析电磁学试题中各知识点的分布情况，最后对电磁学试题的方法进行剖析。

讨论在一维情况下,海森伯广义不确定度关系为下界时,波函数所对应的形式,并指出携带相位的波函数对于位置与动量不确定度关系的影响.

The position and momentum uncertainties for the one-dimensional harmonic oscillator problem have been calculated ,both of w hich have been found to become larger on higher energy levels .It indicates that the two popular statements about the uncertainty relation ,i .e ,“the uncertainty of one operator de-creases ,that of the other must simultaneously increase” and “w hen the uncertainty of one operator be-comes vanishing ,that of the other must approach infinity” ,are simply misconceptions .The origin of such w rong misconceptions has been analyzed ,and ,further more ,the case has also been discussed that the sys-tem is in one of the eigenstates of an operator concerned ,thus the uncertainty of this operator is always ze-ro ,w hich thus denies the uncertainty relation given by Heisenberg or Robertson ,w hich again confirms the fact that the uncertainty relation does not cherish any principal meanings .

Firstly ,The ratio of the mechanics problems of the physics competition for college students is counted .And then ,the distribution of the knowledge points is analysed .Two typical mechanics problems are dissected at last .

By solving the Schrdinger equation and using Fourier transform,the two-dimensional electron wave function is derived,and some issues concerning with the position-momentum uncertainty relation are discussed.

Following Marcella's quantum mechanics description of the single-slit diffraction,the coordinate-space and momentum-space wave functions for an electron passing through the single-slit are derived,and then,the uncertainties of the position and momentum are reconsidered.

In this paper,We present the fact how the Chinese science prepared the Chicago World's Fair(in 1933)whose theme was progress.Scientific works selected for competition and their scientific level are also introduced.The significance of these in the history of science is reviewed.

Position and momentum uncertainties,Δx and △p,for a particle in the one-dimensional infinite potential well are calculated. It shows that they obey the general uncertainty relation △x·△p■/2 though,yet they follow the same trend in changing among different states. Similar phenomenon for △t and △E (where △ has a distinct definition) also has been confirmed in some spectral measurements.

Based on the idea of statistical mean lonely, the run-against-wall number and the mean collision frequency of gas molecules are derived model-independently.

The single-slit diffraction experiment is often used to explain the uncertainty relation,ΔxΔpx≈ h,in College Physics teaching.Such an approach means non-scientific knowledge of this relation,which is apedagogical virus affecting not only the students but also the teachers.Some of the defects are analyzed in this paper,and it is hoped that this work will be useful for the teachers in the teaching of the uncertainty relation.

2008年北京奥运会标志性场馆之一--国家游泳中心,[1]具有巧夺天工的设计、纷繁复杂的结构、简洁晶莹的造型,蕴含着先进的绿色科技,凝聚了中国人的智慧和自主创新的勇气.极好地体现了北京奥运会"绿色奥运、科技奥运、人文奥运"的三大理念.

本文简要介绍了20余年来全国部分地区大学生物理竞赛的概况,对试题的主要特色进行了综合述评,并对竞赛活动提出了几点建议.

结合对MIT研究型物理教学模式的研究,本文简要地分析了传统物理教学的窘境,提出了物理教学改革应着重抓紧解决的几方面问题.

空竹是我国传统的音响玩具,具有健身功效.抖空竹的技艺中蕴涵着丰富的力学原理,尤其是单轮空竹,与回转仪的原理如出一辙.主要阐述抖单轮空竹中的几个基本的力学原理.

英国实验物理学家阿斯顿因发明质谱仪分离同位素而获得1922年诺贝尔化学奖.他只拥有学士学位,这在诺贝尔奖的获得者中是不多见的.他是怎样取得成功的,又为何能取得成功?是值得我们去探究的.文章着重介绍了阿斯顿的研究历程,并分析其成功经验,以为今天所倡导的创新研究提供借鉴.

The comparison of academic and experimental scores is made between the five universities, which have done well in the last two sessions of engineering physics contests. The reason of lower scores in experiments is analyzed, and a new thought to the experiments teaching is presented.