给一位朋友看一只空的苏打瓶,并告诉他虽然瓶子看上去像空的,但你能证明它确实是装满东西的:把一只瘪汽球放进瓶里,如图所示。将汽球口撑开在瓶口上,你的朋友能将瓶中的汽球吹起来吗?没门!为什么?不管你的朋友怎么使劲吹,他或她都无法将瓶中的汽球吹起来。这是因为瓶中已经完全被空气充满了,空气虽然 Tell a friend about an empty soda bottle and tell him that although the bottle looks like it is empty, you can prove that it is indeed full of things: Put a helium balloon into the bottle as shown . Open the balloon on the bottle, can your friend blow the balloon in the bottle? No way! Why? No matter how hard your friend blows, he or she can’t blow up the balloon in the bottle. This is because the bottle is completely filled with air, although the air