The potentially deadly threat changes in pressure pose for divers. What happens when a diver experiences the bends, and how can they be saved?
- The Bends is decompression sickness, which affects divers if they return to the surface too quickly.
- As a diver goes deeper underwater the pressure increases.
- Bubbles of nitrogen gas form in the bloodstream if there is a rapid increase in external pressure forces.
- Atmospheric pressure is caused by the weight of air above.
Going deep underwater, divers face a potentially deadly threat – pressure.
Hydrostatic pressure is produced by the weight of water pressing on the diver.
It pushes against the diver from every direction, and increases with depth.
Pressure increases significantly with depth:
Surface = 100 kPa
10m depth = 200 kPa
20m depth = 300 ...
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