so the sleeper comes through with an ACTUALL ANSWER ! right or wrong an inteligent response none the less. well mr. sleep i agree about the density of the air , but your not suggesting that the pressure came as a result of adding that much pressure in the typical sense...example - if i had introduced compressed air the exact same way it would not have affected the airs density or pressure - yes/no what is the true definition of density when it comes to air...more in the same space = pressure ?