瓶“吞”蛋实验是九年义务教育初中（物理｝第一册中，显示大气压强Pa存在的趣味性实验。其做法如下：取一只口径比鸡蛋略小的广口瓶，将燃烧的酒精棉放置瓶内，再将煮熟剥去壳的鸡蛋放在瓶口，鸡蛋一下子就被吸了进去。显然，瓶内气体的压强Pi小于Pa是蛋被“吞”入瓶的原因。 Bottle “swallow” egg experiment is nine years of compulsory education in junior high school (Physics) Volume I, showing the existence of atmospheric pressure Pa interesting experiments. The practice is as follows: Take a slightly smaller diameter than the wide mouth jar of eggs, will burn The alcohol cotton placed in the bottle, and then cooked shell peeled eggs on the bottle, egg suddenly sucked in. Obviously, the pressure Pi inside the bottle is less than Pa is the egg is “swallowed” bottle into the bottle.