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光的偏振现象是物理光学中重要内容之一,也是普通物理光学教学中的难点之一。仅仅靠课堂讲授,学完之后,学生仍然感到抽象;在课堂讲授之后,再在实验课中让学生独立地、仔细地做一些偏振现象的观察和分析,对巩固课堂教学、建立清晰而具体的概念很有必要。 但是过去所用的立式偏振实验仪调节很不方便,实验效果不很理想。如果在光具座上进行,对某些现象的观察比较容易,但对反射起偏、布儒斯特角的测定等需要测量入射角的项目,就不易办到。我们在教学实践中体会到这一实验的主要目的不在于训练调节仪器的能力,而在于引导学生在实验中仔细观察现象和深入分析这些物理现象的实质。因此要求所用仪器要调节方便、现象明显、结果准确。为此,我们设计了一种简单的偏振光实验器,使用效
The phenomenon of polarization of light is one of the most important contents in physical optics and also one of the difficulties in the teaching of ordinary physics optics. Students are still abstracted only after lecturing in the classroom. After lecturing in the classroom, students are allowed to observe and analyze some polarization phenomena independently and carefully in the experiment class. This will help students to consolidate classroom teaching and establish clear and specific Concept is necessary. However, the vertical polarization experiment instrument used in the past is very inconvenient to adjust, and the experimental result is not very satisfactory. If the optical bench, the observation of some phenomena easier, but the reflection of Polaris, Brewster’s angle measurement need to measure the incident angle of the project, it is not easy to do. In teaching practice, we realize that the main purpose of this experiment is not to train the ability to adjust instruments, but to guide students to observe the phenomenon in experiments and to thoroughly analyze the essence of these physical phenomena. Therefore require the use of the instrument to facilitate the adjustment, the phenomenon is obvious, the result is accurate. To this end, we designed a simple experimental polarizer, the use of efficiency