Originally Posted by
PENKO
But if you pump a gas (air) into a vessel then for sure the weight will increase. Do you scuba? An empty tank is noticeably lighter than a filled one.
As we are obviously into pedantry on this thread,
PENKO, the tank would not be "full" or "empty" - "charged" or "discharged" it may be - I would suggest it would always be "full" of something, albeit the pressure and density may change ...
JD
