初二物理课做托里拆利实验时,往玻璃管注水银容易外溢,造成不必要的损失,不仅不安全,而且玻璃管易损,笔者对该实验进行了改进,利用细透明胶管代替玻璃管,操作简单,方便易行,效果良好。一、实验器材制作(如图1)1.底座:25cm×15cm(木板)2.立杆(木标尺)110cm×4cm×2cm3.木斜杆(附 When the physics class did the Torrey in the second physics class, mercury injection into the glass tube was prone to overflow, resulting in unnecessary losses. Not only was it unsafe, but also the glass tube was easily damaged. The author improved the experiment by using thin clear plastic tubes instead of glass. The tube is easy to operate, convenient, and effective. First, the experimental equipment production (Figure 1) 1. Base: 25cm × 15cm (wooden board) 2. Pole (wood ruler) 110cm × 4cm × 2cm3. Wooden slant (with