Hi! I've been experimenting in my kitchen (much to wife's amusement) with vacuum pressure. Basically, I have been trying to understand...if I have a container (2 ltr soda bottle size/type) that is at low pressure (e.g. 1/2 atm) and I put a small hole on one side...will the soda bottle move in the direction in which I put that hole? My hypothesis is that there is a higher pressure on the non-hole side and so it would push the bottle to the lower pressure side. So far my experiments have not shown this to be the case. I am guessing its because the air coming in from the side of the hole still provides a force keeping the soda bottle stationary but...I thought the lower average molecule hits on the lower pressure side would result in some force to move the bottle. In any event I certainly am appreciating the power of the atmosphere as most of my containers get crushed. oh...the container I finally settled on was not a soda bottle but a metal non-crushable cylindrical container Any help is much appreciated by me and my wife!