Andrew Gabriel wrote:
In article ,
Lobster writes:
Ian Stirling wrote:
Air goes through holes much, much easier than water, and will escape
hundreds of times faster than if filled by water.
Is it just about speed? Or is it likely that a system could be
watertight - ie perfectly serviceable in practice - but not actually
100% airtight?

It should be airtight in any case, otherwise air leaks
in (even when the water pressure is much higher than air
pressure)

OK I'll bite: how does that work?!
David