Crushing a Steel Drum压碎一个钢 drum
Dan Stamm, a physics teacher at Campbell High School in Smyrna, GA constructed a platform for heating water in a steel drum. The drums used had a surface area of about 3000 square inches. The force of one atmosphere of pressure on that area is about 44,000 lbs or 22 tons! Nevertheless, such cans can be made of reasonably thin steel because the same force normally acts outward from the inside of the vessel. 丹·斯塔姆是佐治亚州斯米纳市卡姆皮尔高中的一名物理老师，他设计了一个用于加热水的平台，使用的是钢桶。这些钢桶的表面积约为3000平方英寸。一个大气压对这个面积的力约为44,000磅或22吨！然而，这样的桶可以用相对薄的钢制成，因为同样的力通常作用于容器的内侧向外。
The vapor will then push most of the air out of the can. The can is then sealed as the heat is removed. If the drum is cooled quickly, the sudden drop in vapor pressure will result in enough net inward pressure to crush the can. 蒸气随后会将大部分空气挤出罐子。当热量被移除时，罐子被密封。如果鼓风迅速冷却，蒸气压的突然下降会导致足够的净向内压力，使罐子被压扁。
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Index Atmospheric pressure demos Producing a vacuum by boiling water Pressure concepts 索引：大气压演示 通过沸腾水产生真空 压力概念 | ||
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