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将废温度计两端折断,使之成为一长约20厘米内径很细的玻璃管,在酒精喷灯上使断处圆口,然后,将这根玻璃管穿过橡胶塞.再准备一个瓶口刚好能被橡胶塞封住的小烧瓶.利用这些器材可以完成的实验是:1.演示力能改变坚硬物体形状的实验.在小烧瓶中盛满有色液体(染色水),将穿有玻璃管的橡胶塞封住瓶口,使有色水进入玻璃管中,高度以占玻璃管一半为宜。用细线在有色水柱面处扎一圈作为记号,然后用手指用力捏烧瓶球部,可以观察到玻璃管中有色液柱上
The waste thermometer is broken at both ends to make it a very thin glass tube with a long inside diameter of about 20 cm. Round the cut off on the alcohol torch. Then, pass the glass tube through the rubber stopper. Prepare a bottle again. Small flasks that can be sealed by rubber stoppers. Experiments that can be done with these devices are: 1. Demonstration of experiments that can change the shape of hard objects. In a small flask filled with colored liquid (dyeing water), will be wearing a glass tube The rubber stopper seals the bottle mouth so that the colored water enters the glass tube, and the height is preferably half of the glass tube. Use a thin line to make a circle around the colored water cylinder and then pinch the flask with your fingers to observe the colored liquid column in the glass tube.