mannie
Dinghy Sailor
Posts 3
Points 3
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How does SCUBA works? What makes it an effective and safe breathing apparatus?
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scubaman
Surface-air Diver
Posts 149
Points 149
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Self-contained underwater breathing apparatus, (scuba), has been developed to enable man to swim and stay underwater for long periods of time.
A scuba diver carries metal tanks (that hold compressed air or a
special mixture of breathing gases) on his back and wears a mask and
fins.
Breathing compressed air will damage the lungs. How can the compressed air be made safe to breathe?
The diver breathes air from the tanks through a hose. The air is fed to
the diver's mouthpiece through a regulator which does two things:
- It automatically reduces the pressure of the air from the tank to a
safe level (equalized with outside water pressure) for the diver to
inhale.
- It supplies air when the diver inhales.
When the diver exhales, the air from his lungs is released into the water and is seen as a rush of rising bubbles.
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nereids
Free Diver
Posts 20
Points 20
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also important to note is that there are two kinds of scuba sets, the open circuit or the closed/semi-closed circuit.. in europe open circuits are also referred to as aqualung.  bit of trivia there.. another gadget it includes is the demand regulator to control the supply of breathing gas.
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scubaman
Surface-air Diver
Posts 149
Points 149
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nereids posted the following on Thursday 24th April 2008
also important to note is that there are two kinds of scuba sets, the open circuit or the closed/semi-closed circuit.. in europe open circuits are also referred to as aqualung. bit of trivia there.. another gadget it includes is the demand regulator to control the supply of breathing gas.
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Very good , I was just giving a basic answer since I inferred the poster to be a newbie.  . Thanks for the trivia.
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nereids
Free Diver
Posts 20
Points 20
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glad to add something for mannie..
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