Innovative Use Of Digital Video Technology In Instructional Physics Laboratories

数字视频技术在教学物理实验室中的创新应用

• 批准号: 9351104
• 负责人: John Idoine
• 金额: $ 5.7万
• 依托单位: Kenyon College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-04-15 至 1995-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9351104&HistoricalAwards=false
• 关键词: Innovative; Use; Digital; Video; Technology

Digital Imaging is an emerging discipline with widespread applications in science and engineering. We are introducing digital image acquisition and processing as standard techniques throughout our laboratory curriculum. Recent advances in digital video and in the power of microcomputers have made imaging technology a powerful and cost-effective new tool for data acquisition and analysis in undergraduate physics laboratories. Inexpensive systems are now available which can capture full-motion digital video directly to computer disk at live video rates. We are using these systems to improve laboratory instruction in our introductory, modern physics, and advanced laboratories. Each laboratory station is being networked and equipped with a television camera, video acquisition hardware, and a computer capable of processing and displaying video images. In the introductory laboratory these systems are being used to study motion, wave phenomena and optical diffraction and interference. Live video is especially well suited for the quantitative motion studies since it is capable of capturing and quantifying a wide variety of phenomena without the construction of special apparatus. With video, motion is recorded far more completely than is possible with photogates even when trajectories cannot be predicted. For advanced laboratories we have purchased an instructional scanning tunneling microscope (STM) and a powder camera and develop experiments using digital image processing techniques to compare images of atomic structures (ATM) with electron and x-ray diffraction patterns. Standardization of imaging hardware and software across our curriculum allows students to build skills efficiently, preparing them for research with four faculty members who use digital imaging techniques. We make full-motion and still frame images and curricular materials available to others by maintaining a listserver and supporting anonymous file transfers (FTP) via the Internet.

数字成像是一门新兴学科， 在科学和工程中的应用。 我们正在引入 作为标准技术的数字图像采集和处理 我们的实验室课程。 的最新进展 数字视频和微型计算机的力量使 成像技术是一种功能强大且具有成本效益的新工具， 大学物理数据采集与分析 laboratories.现在有廉价的系统可供使用， 捕捉全动态数字视频直接到计算机磁盘. 实时视频费率。 我们正在使用这些系统来改善 在我们的入门实验室指令，现代物理学， 先进的实验室 每一个实验室都在 联网并配备了电视摄像机、视频 采集硬件，以及能够处理和 显示视频图像。在入门实验室中， 系统被用来研究运动，波动现象， 光学衍射和干涉。 视频直播尤其 非常适合定量运动研究，因为它是 能够捕捉和量化各种各样的 没有特殊设备的构造。 与 视频，运动被记录得比可能的更完整 即使轨迹无法预测也能使用光电门。 对于先进的实验室，我们已经购买了一个教学 扫描隧道显微镜（STM）和粉末照相机， 利用数字图像处理技术开展实验 将原子结构（ATM）的图像与电子和 X射线衍射图。成像硬件标准化 我们的课程和软件允许学生建立 有效地掌握技能，为他们的研究做好准备， 使用数字成像技术的教师。 我们做出 全动态和静止帧图像和课程材料 通过维护列表服务器和支持 匿名文件传输（FTP）通过互联网。