Diving Manual, 1943, Part 64 |
Contents
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Common terms and phrases
75 pounds air flasks air supply air-regulating approximately ascent asphyxia atmospheric pressure battery bottom brass breastplate breathing buoyancy burette carbon dioxide cloth tags CO₂ compressed air compressors connection control valve cubic feet cubic foot cylinder decompression decompression stop decompression tables depth descending line dew point diameter diver diver's air hose diving air pump diving amplifier diving dress diving helmet diving launch diving operations diving outfits diving pump diving telephone equipment excess exhaust valve faceplate feet feet feet per minute fitted furnished gage gasket glove helium holes inside jack plug leather length mixtures Navy necessary nonreturn nozzle oxy-helium oxygen oxygen-helium patch percent pontoons pounds per square recompression chamber relief removed rubber salvage operations screw secured shown on plate side square inch stage standard diving stop straps submarine submerged surface symptoms temperature test tank torpedo tube underwater ventilation volume tank washers weight wire
Popular passages
Page 256 - An aggregate of cells together with their intercellular substance, forming one of the structural materials out of which the body of a plant or an animal is built up. Trachea. — Windpipe ; in vertebrates, the main trunk of the system of tubes by which air passes to and from the lungs; in man it is about 4...
Page 124 - Boyle's law states that, at a constant temperature, the volume of a body of gas varies inversely as the pressure to which it is subjected.
Page 253 - Epiphysis A part or process of a bone which ossifies separately and subsequently becomes ankylosed to the main part of the bone. In...
Page 128 - If a diver at the surface, in 14.7 pounds pressure to the square inch (absolute), should fall 33 feet under water, every square inch of his body would have an additional pressure of 14.7 pounds, or 29.4 pounds absolute pressure suddenly applied to it, a proportion of 2 to 1 over the pressure in the helmet. As the body has an area of about 2,000 square inches, the total pressure exerted on the diver's body and tending to drive him into the rigid helmet would be several tons (14.7). If, under the same...
Page 256 - Dizziness, or swimming of the head; an affection of the head in which objects, though stationary, appear to move in various directions, and the person affected finds it difficult to maintain an erect posture. It results from changes in the blood supply to the brain and often precedes attacks of epilepsy or cerebral hemorrhage.
Page 124 - Law states that, at a constant pressure, the volume of a given mass of gas is directly proportional to the absolute temperature. Charles...
Page 137 - Boyle's law. The volume of a gas is inversely proportional to the pressure if the temperature remains constant.
Page 252 - ... between the arteries and veins. Capillaries consist of a single layer of endothelial cells. Through these walls the tissues absorb the nutriment and oxygen from the blood and discharge their waste into it. Central nervous system. — That part of the nervous system to which the sensory impulses are transmitted and from which the motor impulses pass out ; in vertebrates, the spinal cord and brain. Cerebral. — Of or pertaining to the cerebrum, or hemispheres of the brain. Compression. — Subjection...
Page 252 - Schaffer method. Asphyxia. — Apparent death or suspended animation, in living organisms due to deficiency of oxygen or an excess of carbon dioxide in the blood, as interruption of respiration from suffocation or drowning, or from inhalation of irrespirable gases. Caisson. — A watertight box or chamber within which submarine construction is carried on under air pressure to keep out the water. The diving suit may be likened to a caisson. Capillary. — A minute, thin-walled vessel, as the smallest...
Page 138 - ... in which /S' is the required air supply in cubic feet, measured at the surface, and F is the number of feet the diver is below the surface.