传统的托里拆利实验，灌水银占很长时间，排出残存气体十分困难，而最后的结论却是推理得出的。笔者按下述方法多层次演示，揭示大气托起水银柱更具说服力，且方便迅速易于重复。1装置简介如附图所示：①无色厚壁玻璃药瓶，容积30～80mL；②水银；③穿过橡皮塞长约90cm的玻璃管 In the traditional Torricelli experiment, irrigation of silver took a long time and it was very difficult to discharge residual gas. The final conclusion was reasoned. According to the author’s multi-level demonstration according to the following method, it is revealed that the atmosphere holds up the mercury column more convincingly, and it is convenient and rapid and easy to repeat. 1 Introduction to the device As shown in the attached drawings: 1 Colorless glass bottle with a volume of 30-80 mL; 2 Mercury; 3 Glass tube with a length of about 90 cm through the rubber stopper