We made a hole in a cork and pushed a narrow glass tube into it. Then we pushed this into the neck of a bottle which we had filled with colored water. When we did this some of the colored water went up into the tube. We marked the level of the colored water in the tube. Then we put the bottle into a pan of hot water. Almost at once, the water level in the tube fell slightly, but then it started to go up until the water poured out over the top. 我们在软木塞上钻一个,在此中插进一根细玻璃管。然后把插有玻璃管的软木塞塞进一个装有带色水的瓶嘴里。当我们这样做时,瓶里带色的进入少许。我们标明带色水在试管中的高度后,再将瓶放进一个热水的盆里。瓶中的水,几乎立即轻微下降一点,但随即又开始上升,直到带色的玻璃管上端溢出。