J2515型双缝干涉实验仪安装调节经验谈

J2515型双缝干涉实验仪是高中物理学生实验仪器，它与我具座和学生电源（输出电流为2A或3A）配套使用，可以观察白光和单色光通过双缝所产生的干涉图样，并可测量单色光的波长。它具有操作简便，性能稳定，干涉条纹清晰等优点。     

用双缝干涉测光的波长实验的调整与改进

"用双缝干涉实验仪测光的波长"实验中,仪器的调整是困扰广大师生的一个大问题,许多学生一节实验课下来,干涉条纹都没调出来,实验失败.笔者通过对此实验的认真研究分析,总结出一套实验仪器的调整与改进方法,在实验中,学生5分钟内能都调出清晰的干涉条纹.     

雷诺实验仪的改进与创新

雷诺实验是显示层流和湍流的重要实验。在传统雷诺实验仪的基础上,自主设计开发了新型的雷诺实验仪,该实验装置具有自循环水系统、贮水箱水头稳定以及示踪剂颜色自动消失等特点。通过实验教学使用,明显比传统的雷诺实验仪具有优越性,解决了传统雷诺实验仪存在的一些弊端,值得在高校流体力学实验教学中推广使用。     

基于微波光学实验仪研究光的干涉现象

利用微波光学实验仪研究杨氏双缝干涉、劳埃德镜、迈克尔逊干涉以及法布里-珀罗干涉,并且测定出了微波的自由空间波长,与实际值相比较为吻合.利用微波干涉模拟光的干涉实验,有助于发挥其在光学实验课程中的促进作用.微波光学实验仪提供了多种附件和实验方案,可以进行综合性、设计性和研究性实验,为大学物理光学部分的理论分析与实验教学提供便利.除此之外,还可以引导学生开展探究性学习,加深学生对物理规律的理解,从而提高教学质量.     

流体物理现象的观察与研究

用德国莱宝教学仪器公司提供的风洞演示实验仪，学生自主设计实验，观察和研究空气阻力与风速、物体横截面积、物体形状的关系以及飞行原理等。     

流体力学多功能实验仪的研制

研制了小型流体力学高水头多功能实验仪，实现了水力学及流体力学教学实验设备小型化，同时，又能达到大型设备的实验效果。该设备可进行文透里实验，粗、细不同管径的沿程阻力实验和局部阻力实验。实验仪除具有自循环、水头稳定、多功能、小型化、可移动及操作方便等优点外，其最大特点是水头显著提高，有效拓宽了雷诺数的实验范围，实现了现有小型设备所无法达到的实验效果。     

物理光学实验仿真平台的开发

为了提高学习者的学习兴趣和积极性,打破传统物理光学实验受时间和场地的限制,利用Matlab图形用户界面的设计与开发功能,制作了简洁美观、可拓展性强的物理光学实验仿真平台,实现了对多个经典光学实验的计算机仿真,包括光学拍、球面波干涉、杨氏干涉、等倾干涉、等厚干涉、夫琅和费衍射、菲涅耳衍射、光栅衍射、空间滤波、光的偏振和全息照相等.实验结果表明,该平台具有实验参数可灵活设置和良好的人机交换功能,并且通过mcc编译可以脱离Matlab环境使用.     

用激光教鞭演示光的干涉和衍射

老师们普遍反映用J2525型双缝干涉实验仪做光的干涉现象不易成功，究其原因，主要是实验仪配用的白炽电灯亮度不太大，且放置位置不易调整。     

启东计算机厂有限公司：新品推荐DVCC-ZHC2单片机原理应用综合实验装置

单片机、微机接口仿真实验系统、实验装置，计算机组成原理与系统结构实验系统，数电/模电实验仪、实验装置，EDA技术实验及开发系统，DSP实验系统。     

基于虚拟仪器的传感器课程综合实验教学

分析了目前传感器课程教学实验环节中存在着设备落后、缺乏生动形象的实验手段、与实际工程应用脱节等问题。介绍了DRVI虚拟仪器设计系统，并将其与CYS10型传感器实验仪结合，构成基于计算机技术的新的传感器实验平台。采用虚拟仪器技术不仅可在提高实验设备水平的同时降低更新实验设备所需的投资，而且通过综合性实验为提高学生全面运用所学知识的能力创造了良好的实验条件。     

汉字倒说

汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

钱生钱!

我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了     

Inequalities for inscribed simplexes

The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

微薄的薪水,高尚的情操

现在,我们可以没有面包,没有钱,没有房子,没有车子……但我们唯独不能丢失的是高尚的情操,笃定的信念,还有,满满的希望!     

Virtual reality approach for 3D large model browsing on web site

Using virtual reality for interactive design gives a designer an intuitive vision of a design and allows the designer to achieve a viable, optimal solution in a timely manner. The article discusses the process of making the Virtual Reality System of the Humble Administrator＇s Garden. Translating building data to the Virtual Reality Modeling Language （VRML） is by far unsatisfactory. This creates a challenge for computer designers to do optimization to meet requirements. Five different approaches to optimize models have been presented in this paper. The other methods are to optimize VRML and to reduce the file size. This is done by keeping polygon counts to a minimum and by applying such techniques as object culling and level-ofdetail switching.