Optical Microscopy Systems and Video Display in Under- graduate Petrography Laboratories

本科生岩相学实验室中的光学显微镜系统和视频显示

• 批准号: 9050518
• 负责人: Judith Hannah
• 金额: $ 2.1万
• 依托单位: University of Vermont & State Agricultural College
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-09-15 至 1993-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9050518&HistoricalAwards=false
• 关键词: Optical; Microscopy; Systems; Video; Display

Modern laboratory investigations in petrography, the study of the mineralogy and textures of rocks, go far beyond traditional methods of transmitted light microscopy. We are requesting an optical microscopy system to bring new equipment and techniques into our undergraduate curriculum. The equipment includes a polarizing microscope with both transmitted and reflected light systems to display all three types of images. Cathode luminescence is sensitive to specific trace elements in minerals; it highlights subtle textures produced by sequential crystal growth that are not visible in transmitted light, and permits rapid identification of certain minerals. Reflected light allows identification of opaque minerals and study of their intergrowths. With the video system we can dramatically increase efficiency and clarity in instruction of petrographic methods: we will all be looking at the same feature at the same time. The alternative is painstaking interaction with each student, taking turns viewing an image in the scope. The students will use the instruments in a series of new classroom exercises and in undergraduate research. The video display also allows instructive demonstrations in introductory classes to show the importance of synthesizing several types of information.

岩石学的现代实验室研究， 岩石的矿物学和结构， 透射光显微镜的传统方法。 我们 要求光学显微镜系统将新设备 和技术融入我们的本科课程。 设备 包括透射和透射偏振显微镜， 反射光系统来显示所有三种类型的图像。 阴极发光对特定的微量元素敏感， 矿物;它突出了由连续的 在透射光中不可见的晶体生长，以及 可以快速识别某些矿物。 反映 光可以识别不透明的矿物，并研究其 共生体 有了视频系统我们可以大大提高 岩相学方法教学的效率和清晰度： 我们都将同时查看同一功能。 的 另一种选择是与每个学生进行艰苦的互动， 在示波器中查看图像。 学生将使用 在一系列新的课堂练习中使用乐器， 本科研究。 视频显示还允许 在入门课程中进行有指导意义的演示， 综合几类信息的重要性。