1.常规实验的不足常规实验用蜡烛、玻璃板、刻度尺等器材探究平面镜成像特点(如图1所示)。由于蜡烛燃烧造成两支蜡烛不等,烛焰的晃动,不便于找到像;并且燃烧后的蜡烛油及黑烟会污染环境,蜡烛消耗多且不能重复利用,浪费资源。比较物距和像距时,需在白纸上绕 1. The lack of routine experiments routine experiments with candles, glass, scale and other equipment to explore the characteristics of the plane mirror imaging (as shown in Figure 1). The two candles are not equal due to the burning of the candle, and the slipping of the candle flame is inconvenient to find like. And the burning candle oil and black smoke pollute the environment, the candle is consumed and can not be reused, which is a waste of resources. When comparing the object distance and image distance, wrap around the white paper