Tutorial - How to Make Underwater Air Balloon.





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Do Pa: As a certified SCUBA Rescue Diver, this is so incredibly dangerous that I don't know where to start.  I've got to give Rulof an "A" for effort, but many caveats need to accompany this so that someone does not get killed.  You need to understand the physics/biology of what happens with breathing compressed air underwater. 
First, the air bubble at that depth is "compressed air" because it must equal the pressure of the water at that depth or the water pressure will deflate the bubble.  So the air is the same pressure as the surrounding water.  At 33 feet (probably not quite that deep, but the numbers are easier) the bubble would be 1/2 the size of the same amount of air at the surface.  That means that if you completely fill your lungs with bubble-air at that depth, then swim to the surface, the air will expand to 2X the size of the air at 33 feet. If you hold your breath the entire way, your lungs will burst.  If you get a small rupture in your lung it is called an "air embolism" and a blood clot will enter your circulatory system and could cause a heart attack, stroke, or variety of other ailments.  Even if you are at only 15 feet the air will expand by 50% on your way to the surface.  So you must exhale as you surface to prevent this.  This is taught to SCUBA divers as an emergency assent procedure.
Second, the way you get the urge to breath is by the percentage of CO2 in your lungs.  There is still plenty of O2 in the air to live on (about 5X as much) but the CO2 build up tells your body to breath.  If you try to trick your body and push it way past that CO2 level it will cause you to pass out - this, your body does to say the autonomic nervous system knows better than you what is right for your body, so let me knock you out and take over.  This works with partial gas pressures (a SCUBA concept) for the O2 and CO2 in your lungs.  The important point in breath-hold diving is that you can hold your breath too long below, ignoring the urge to breath, and as you ascend the CO2 reaches sufficient percentage of the air in your lungs that you pass out before reaching the surface.  This is known as "shallow water blackout" and the possibility would be enhanced by people exhaling CO2 into the bubble during their trips there and breathing/talking in the bubble.  As you breath the "used" bubble air, it has a higher percentage of CO2 to start with.  So the chance of shallow water blackout could be higher with this bubble air than with just normal breath-hold diving.
Finally, the CO2 in the bubble would increase with more breathing and less refreshing of the air in the bubble.  At some point it will get to where the breath-hold diver will get to the bubble expecting O2 and getting enough CO2 to cause a black out at the bubble.  Although shallow water blackout is deadly enough, a blackout at an even greater depth is even more deadly.
You need training to understand the dangers.
Indu: +knslr "Rising CO2 concentration is just the indicator for central nervous system that it's time to breathe." 3% CO2 by volume will cause increased heart rate and blood pressure. 5 % will cause heavy confusion. 8% will make you pass out. "Shallow water blackout has nothing to do with CO2." he never said that it did.
BirdFinalNotes: I'm srry if I'm mean but who the fuck will read all of that.(unless your really bored) don't get mad my opinionπŸ˜πŸ˜πŸ˜πŸ’„πŸ‘‘πŸ‘’πŸ‘“πŸ¦πŸ—πŸ€πŸ₯ πŸ£πŸΉπŸŒ‡πŸŒ‡πŸŒ‡πŸŒ‹πŸŒ‹πŸŒ‹πŸŒ‹πŸŒƒπŸŒŒπŸŒŒπŸŒŒπŸŒŒπŸŒŒπŸŒŒ
bryan weaver: The most ignored quote/advice in the history of man, " Check out this cool ass shit, it is just as cool and fun as it looks" "Never try this at home". Same as telling a child "don't touch that " . By saying that you have guaranteed the very next thing they do when you turn your back for one second, you couldn't have made it any more of a sure thing if you dipped it in chocolate.  




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