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The First Stage ..( the bit on the tank) of a diving regulator senses the pressure exerted on the regulator ( and also on the body) to see how much it is being squeezed, it then compensates for the pressure by filling your lungs with more air than they could hold on the surface BUT because the lungs are being "squashed" the air fills your lungs like normal. The only potential problem comes when you ascend..because you have too much air in your lungs as it starts to expand, it could overinflate your lungs to the point they literally blow up!
A Scuba diver will want to descend as quickly as possible in order to get to their target depth having absorbed as little nitrogen as possible. However, the diver needs to continually equalize the pressure in his or her ears to prevent discomfort or damage to the eardrums. How easily the diver can equalize can determine how quickly they can continue to descend.
Aside from that, the fact that when descending the diver weighs only a little more than the water he or she displaces keeps the diver from falling like a rock to the bottom. Once the diver reaches the desired depth, they'll have added air to their buoyancy compensator to become neutrally buoyant -- to weigh exactly the same as the water they displace, and therefore hover in place.
Addition
There are pros and cons to descending quickly. In short, as long as a diver can equalize their ears as well as maintain buoyancy control on the way down, the descent rate does not matter. There is a theoretical physiological benefit (possibly small) to descending fast in that it could help crush some micro-nuclei - which can be thought of as seeding bubbles. So crushing some gives fewer locations for bubbles to form. While this would increase the nitrogen absorption (due to reaching the deepest depth faster), it is not that significant. On the other hand, descending quickly does seem to make divers more susceptible to narcoses at the deeper depths, especially if one does not routinely make deeper dives.
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Why divers need to ascend slowly when diving?
Hell if ik..
How do scuba divers rise to the surface after they dive?
Slowly
Why do scuba divers need to exhale air when they ascend to the surface of the water?
Air in your lungs is compressed by the pressure of the water. As the pressure of the water goes down (as you go up) then the air will expand. If you allow it to expand while trapped in your body, you can damage your ears and lungs. ascending means starting from least and moving towards highest
What is the participle of climb?
To ascend or mount laboriously, esp. by use of the hands and feet., To ascend as if with effort; to rise to a higher point., To ascend or creep upward by twining about a support, or by attaching itself by tendrils, rootlets, etc., to a support or upright surface., To ascend, as by means of the hands and feet, or laboriously or slowly; to mount., The act of one who climbs; ascent by climbing.
How do you use an inspirometer?
To use an incentive spirometer: Sit upright and hold the spirometer in an upright position. Exhale completely, then place your lips around the mouthpiece. Inhale slowly and deeply to raise the piston or ball inside the device. Try to keep the piston or ball elevated as long as you can, then exhale slowly. Repeat 5-10 times every hour during waking hours as prescribed by your healthcare provider.
What should you do if you experience a reverse block upon ascending?
Slowly descend until you are able to clear the block, then ascend at a normal pace.
What property of a surface determines how quickly or slowly it will heat and cool?
The thermal conductivity and color of a surface determines how quickly or slowly it will heat and cool
How do you use inhalor?
To use an inhaler, shake it before using, then remove the cap and exhale completely. Place the inhaler in your mouth, close your lips around it, and press down on the canister while breathing in slowly and deeply. Hold your breath for about 10 seconds, then exhale slowly. Remember to rinse your mouth after using a corticosteroid inhaler to prevent oral thrush.
What best describes the earths surface?
all ofthe changes on earth surface occur slowly
How is decompression sickness related to pressure?
Divers breathing compressed gases at depth are themselves under pressure. For each 33 feet/10 meters that a diver descends, they add approximately 1 atmosphere of pressure to their body. When they breathe gases whilst their bodies are under this pressure, the gases dissolve into their bodies tissues. When they ascend, the pressure is relieved, and gases are released. Provided that diver ascends sufficiently slowly, the gases are released slowly and no problems result. But if the diver ascends too slowly without allowing the gases to expire at a slow enough rate, then the diver will suffer decompression sickness when gas bubbles form in the diver's tissues and blood.
How does a person get good posture?
Spend at least 30 minutes a day standing with your back against a wall and breath deep. Inhale through your nose slowly, and exhale out your mouth slowly. Practice and focus, be consistent and it can help your posture tremendously.
Why the molten rocks cools slowly below the earth surface as compared to surface?
Rock is an excellent insulator, meaning that it loses heat slowly and gains it slowly, so an intrusion loses its heat slowly to the country rock, and the country rock absorbs it slowly (some of it undergoing metamorphosis). This means that the rock under the surface cools very slowly. On the surface, water and air cause the heat on the surface of the rock to cool very quickly, forming an noticeable chilled margin. This means that in a lava flow, for example, the surface cools to form something that looks solid, whereas underneath it can still be flowing. Inevitably the lava underneath will cool too, and more quickly than underground, as it is nearer to the cool atmosphere.
