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“电磁振■及电磁波”这一课题是十年级的教学大纲中最难的课题之一。这一课题中包括相当广泛的材料,但所能花在上面的时间又很有限--10节课。这就迫使教师要细心地准备讲解的材料,很好地思考并周详地擬订教材,注意课堂演示。应该知道,在中学里,学生应当获得的只是电磁振(?)及电磁波的基本概念,使他们能掌握无线电广播及收音的一般原理,和在以后能了解无线电技术中的最简单的问题。
The topic of electromagnetic resonance and electromagnetic waves is one of the most difficult topics in the 10th grade syllabus. The subject includes a wide range of materials, but the time it can take is very limited - 10 lessons. This forces teachers to carefully prepare materials for explanation, to think carefully and to elaborate textbooks in detail, and to pay attention to class presentations. It should be noted that in secondary schools, students should acquire only the basic concepts of electromagnetism (?) And electromagnetic waves so that they can grasp the general principles of radio broadcasting and radio reception and can later learn the simplest issues in radio technology.