苏科版《物理》(八年级上册)第五章第二节学生实验——“探究凸透镜成像的规律”,实验中用蜡烛作为光源简单易行,可以帮助学生得出凸透镜成像的基本规律,对培养和提高学生的实验能力,提高学生的知识水平起到了积极的作用,但笔者认为用蜡烛作为光源仍有以下几点不足: 第一,由于烛焰自身沿透镜主轴方向有一定的厚 The experiment of using the candle as a light source is simple and easy, which can help students to get the basic law of convex lens imaging, It plays a positive role in cultivating and improving students ’experimental ability and improving the students’ knowledge level. However, I think there are still some deficiencies in using candles as light sources: First, since the candle flame itself has a certain thickness along the major axis of the lens