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一、设计思想中学实验室现有的楞次定律演示仪是用铝制的圆环(图1)制作的,这个仪器装置便于携带但不便于教师演示和学生观察。因圆环太小,教师不便于操作,学生(尤其是后排学生)也看不清楚,且相对较重,从而使演示效果不太明显。为增强实验效果,激发学生兴趣,笔者自制了楞次定律演示仪。
First, the design philosophy High School Laboratory existing Lenz law demonstration instrument is made of aluminum ring (Figure 1), the instrument device is easy to carry but not easy for teacher presentations and student observation. Due to the ring is too small, the teacher is not easy to operate, students (especially students in the back row) can not see clearly, and relatively heavy, so that the demonstration effect is not obvious. In order to enhance the experimental results and stimulate students’ interest, the author made Lenz’s Law Demonstrator.