Take a tin can. Remove the lid and pour some water into it. Heat the can for a few minutes. The water vapor displaces most of the air in the can. Close the can with the lid tightly and stop heating. Cool the can under the tap water and observe what happens to the can. When cold water is poured on the can, the steam condenses into water and the pressure inside the can decrease. The atmospheric pressure outside the can is higher than the pressure inside the can and soothe tin can gets crushed. This experiment shows the existence of the atmospheric pressure.
No comments:
Post a Comment