Gases and Divers

1. By: Ramandeep and Maher Gases and Divers

2. Gases and Divers • Pressure increases, when divers descend, just like in the atmosphere, but when you ascend • Most of the air dissolves into their bloodstream • The ascent is the challenge

3. Cont • Not the problem of carbon dioxide or oxygen • There are two problems: • Nitrogen narcosis • When the diver ascends

4. Cont • Solution: using a mix of oxygen-helium gas rather than air using air instead of nitrogen • A reason is that helium has a lower solubility in water and helium is much less likely of the bubble’s forming in the bloodstream

5. Cont • Nitrogen narcosis, in the fatty brains the solubility nitrogen gas increases causing divers to run out of time because of hallucination or forget the time • When the divers ascend, they have to ascend slowly so the nitrogen has time to be exhaled, because the nitrogen that is released in the bloodstreams can be severely painful or cause death

6. Gas Law • Boyle’s Law • When they dive, the exterior pressure increase dramatically • Scuba apparatus makes sure that the gas pressure from the cylinders is the exact same as the surrounding water • Though they have exhale while ascending so the interior lung pressure is reducing to match the decreasing water pressure