Why does a sea diver breathe a mixture of helium and oxygen instead of natural air?!
Most air ducts are made of nitrogen and oxygenated by four to one. Nitrogen gas does not have any chemical activity going through the body during breathing without causing any chemical change or subsequent effects.
However, the water pressure increases as the depth increases. In order to keep the diver breathing normally, the pressure of the air mixture that inhales must increase. At a depth of about 30 meters, for example, the diver will need to breathe air that increases pressure four times the atmospheric pressure. If the mixture is normal air, the fat tissue in the human body must absorb nitrogen more quickly than it does in the rest of the body tissues. Because the brain and central nervous system are made up of fat and fat by 60 percent. So the gas affects them strongly, and hinders their normal movement. The result is anesthesia of the diver with nitrogen, a condition very similar to that of drinking drunk mascara.
The other risk associated with inhaling the deep-sea nitrogen mixture is stress disorder (bends). If the diver descends very quickly into the sea, the nitrogen in the fatty tissue will expand, forming a bubble in the brain, spinal cord or joints, causing a number of symptoms, including paralysis and severe pain.
The divers can avoid these two conditions by inhaling helium and oxygen instead of air. Helium is also inactive inert gas, does not interact with body tissues and its absorption rate is lower than that of nitrogen. However, it generates more heat and faster than nitrogen, which causes the heat of the diver's body to be lost relative to the temperature of the surrounding water, so the diver who inhales the helium and oxygen mixture is forced to wear a hot diving suit. Finally there is another bad helium gas is its effect in the sound where it becomes a voice splintered as the voice of Donald Duck .. and for a temporary period.
Most air ducts are made of nitrogen and oxygenated by four to one. Nitrogen gas does not have any chemical activity going through the body during breathing without causing any chemical change or subsequent effects.
However, the water pressure increases as the depth increases. In order to keep the diver breathing normally, the pressure of the air mixture that inhales must increase. At a depth of about 30 meters, for example, the diver will need to breathe air that increases pressure four times the atmospheric pressure. If the mixture is normal air, the fat tissue in the human body must absorb nitrogen more quickly than it does in the rest of the body tissues. Because the brain and central nervous system are made up of fat and fat by 60 percent. So the gas affects them strongly, and hinders their normal movement. The result is anesthesia of the diver with nitrogen, a condition very similar to that of drinking drunk mascara.
The other risk associated with inhaling the deep-sea nitrogen mixture is stress disorder (bends). If the diver descends very quickly into the sea, the nitrogen in the fatty tissue will expand, forming a bubble in the brain, spinal cord or joints, causing a number of symptoms, including paralysis and severe pain.
The divers can avoid these two conditions by inhaling helium and oxygen instead of air. Helium is also inactive inert gas, does not interact with body tissues and its absorption rate is lower than that of nitrogen. However, it generates more heat and faster than nitrogen, which causes the heat of the diver's body to be lost relative to the temperature of the surrounding water, so the diver who inhales the helium and oxygen mixture is forced to wear a hot diving suit. Finally there is another bad helium gas is its effect in the sound where it becomes a voice splintered as the voice of Donald Duck .. and for a temporary period.
