Ok then I hear what your saying and my understanding is 14.7 is 1 bar which is the pressure around us, explain this one for me then please. I weighed my bottle full and weighed my bottle empty and it was the same weight.Just to clear this one up for you. Wether your bottle has air or no air the bottle will still weigh the same. It's air, it weighs nothing and wont get heavier under compression
Hey mate just to say air does weigh more under compression it is all to do atmospheric pressure and PSI as the PSI on earth is actually 14.7 PSI all ready but we do not feel this as our body has equal pressure to this and to cut a long story short as psi increases so does the density increasing the weight hope this clears this up for every one sorry to jak thread thought this needed explainin (been studyin mech engineering for 6 years lol)
Tempted I am not jacking your thread just trying to clear your question up bud as I am intrigued now
