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在高中《物理》第二册 (必修加选修 )第八章“反冲运动 火箭”这一节中火箭的原理模型实验里 ,教材提出用薄铝箔卷成一个细管 ,一端封闭 ,另一端留一个很细的口 ,内装由火柴头上刮下的药粉 .把细管放在支架图 1上加热 ,当管内的药粉点燃时 ,生成的燃气从细口迅速喷出 ,细管便
In the experimental model of the rocket’s principle model in the second chapter of the “Physics” of the high school (required for optional repairs), the textbook proposes to use thin aluminum foil rolled into a thin tube, one end closed and the other end to stay A very thin mouth containing the powder scraped from the head of the match. The thin tube was heated on the support plate in Fig. 1. When the powder in the tube ignited, the generated gas was rapidly ejected from the fine opening.