Osmosis was in effect allowing the pressure from the outside of the tank to seep into the interior of the tank. The problem with this is that osmosis would require the aluminum or steel sides of the tank to be permeable. They aren't. Since the volume of the air decreases, the remaining...
Finally, you pull up in the asphalt car park and lug your giant bag and sticks through the door that is slightly too small, then try to jam them and yourself through the even thinner wedge of metal to avoid the public turnstiles. Hockey players don’t pay at the gate. Pre-game general...