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80s,[link widoczny dla zalogowanych],[link widoczny dla zalogowanych], he hacked together his own "rebreather,[link widoczny dla zalogowanych]," a closed-circuit breathing system that allowed him to dramatically extend the time he could dive in the world's wet,[link widoczny dla zalogowanych], partially flooded deep caves. Here's Tabor's description: [. It took him ten years to develop one in his home laboratory, and the model that he invented is now being marketed by a company called Poseidon, which is headquartered in Sweden. The Poseidon Rebreather weighs about forty pounds fully charged and gives the diver eight to twelve hours of continuous time underwater. Stone remained underwater for twenty-four hours with a prototype, and the only problem he had was staying awake. How does the rebreather work? It recycles the air that you exhale. That air has been mildly enriched with carbon dioxide and stripped of oxygen. By running the air through scrubbers that capture the CO2 and adding oxygen from a tank,[link widoczny dla zalogowanych],[link widoczny dla zalogowanych], the recycled air can be returned to breathable air. While a rebreather requires carrying a tank of oxygen,[link widoczny dla zalogowanych], the use