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Basic week_05_and_06 Indirect - Tables Fall 2010

Whichsuitusesanundergarment accessoryequipment

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Unformatted text preview: its completely before storage. Hang wetsuits on wide hangers to prevent creases. Review on Diving Suits Review on Diving Suits What have you learned so far? Which suit would you choose for warm, tropical diving? Which suit is made from neoprene rubber? Which suit uses an undergarment? Accessory Equipment Accessory Equipment Some useful accessories are: Clips to attach your instruments etc. A dive knife is a working tool used for many purposes. A gear bag to transport your gear. Diver­down flag lets others know you are underwater. Laws vary. A logbook is your record of experience in the water and your level of training. It is a good idea to have a first aid kit on any dive trip. Accessory Equipment Accessory Equipment Some more useful accessories are: Underwater slate. Goodie bag. Underwater light. Marker buoy and line. Signaling device. Spare parts kit. Checklist. Review on Accessories Review on Accessories What have you learned so far? What is the most likely use for a knife underwater? What must you do when you fly a dive flag? What are two reasons for logging your dives in a logbook? Name two additional accessories that are useful when diving? The Air You Breathe The Air You Breathe Scuba cylinders are normally filled with dry, filtered air. Air is a mixture of gases. As pressure increases underwater, the increased pressure of each of the gases in the air we breathe has physiological effects. Henry’s Law Henry’s Law (Solubility of gases) Henry’s Law: The amount of gas that will dissolve in a liquid is directly proportional to the pressure of the gas. Gases go into and come out of solution in our body as the pressure of the gas changes. When we dive, we “in­gas”; then when we surface, we “off­gas.” Dalton’s Law Dalton’s Law (Partial pressures) Dalton’s Law: The total pressure exerted by a mixture of gases is equal to the sum of the pressures of each gas. The pressure of each component gas is called its “partial pressure.” Our body “feels” each gas individually. Carbon Dioxide Problems Carbon Dioxide Problems Carbon dio...
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