论文部分内容阅读
乡镇中学实验条件简陋,一些实验由于缺少关键器材,不能演示;一些实验由于教科书设计不当,演示出的效果不佳,失去演示实验的意义,现将自己利用废冰箱的压缩机改进初中物理实验的方法介绍如下。一、自制抽气机购一台废冰箱、废冰柜的压缩机,在进气口、排气口留10cm左右处锯断,方便以后使用,压缩机的电路如图1,检查压缩机的好坏分以下几个步骤:
The experimental conditions of township middle schools are simple. Some experiments cannot be demonstrated due to the lack of key equipment. Some of the experiments are poorly demonstrated due to improper textbook designs, and lose the significance of demonstration experiments. Now they will use the compressors of waste refrigerators to improve the physical experiment of junior middle schools. The method is described below. First, self-made suction machine to buy a waste refrigerator, waste freezer compressor, in the inlet, exhaust port left about 10cm sawing, convenient for future use, the compressor circuit shown in Figure 1, check the compressor is good Bad points in the following steps: