[permalink] [id link]
When an open-circuit scuba diver inhales, a quantity of highly compressed gas from his cylinder is reduced in pressure by a regulator, and enters the lungs at a much higher volume than it occupied in the cylinder.
from
Wikipedia
Some Related Sentences
When and open-circuit
When current flows, however, the voltage across the terminals of the source of emf is no longer the open-circuit value, due to voltage drops inside the device due to its internal resistance.
When and scuba
When the term first surfaced circa the late 1980s / early 1990s, it was used for adult sports such as skydiving, scuba diving, surfing, rock climbing, snow skiing, water skiing, snowboarding, mountain biking, mountaineering, storm chasing, hang gliding, and bungee jumping, many of which were then growing in popularity.
When the Aqua-Lung started commercialization, divers around the world found a scuba device smaller and easier to carry than its precursor, which in fact was almost completely unknown outside of France.
When this happens, humans hear a small popping sound, an event familiar to aircraft passengers, scuba divers, or drivers in mountainous regions.
When compared with open circuit scuba, rebreathers have some disadvantages including expense, complexity of operation and maintenance, and more critical paths to failure.
When scuba diving, a thermocline where water drops in temperature by a few degrees Celsius quite suddenly can sometimes be observed between two bodies of water, for example where colder upwelling water runs into a surface layer of warmer water.
When inhaled at high partial pressures ( more than about 4 bar, encountered at depths below about 30 metres in scuba diving ), nitrogen begins to act as an anaesthetic agent, causing nitrogen narcosis.
When and diver
When more serious, the diver may feel overconfident, disregarding normal safe diving practices.
When the diver carries many diving cylinders, especially those made of steel, lack of buoyancy becomes a problem.
When a diver, who is Abbott's competitor for the affections of Nurse Lieutenant Helen Blair ( Davis ) back at home, gets into a dangerous situation, Abbott must struggle to keep his personal and professional lives separate in dealing with the crisis.
When a diver needs to be underwater for long periods of time day after day, a snug-fitting elastic hood can cause uncomfortable pressure sores on the ears, face, and jaw.
When that breath is exhaled back into the surrounding environment, it has an oxygen level in the range of 15 to 16 % when the diver is at atmospheric pressure.
When the pressure on the container is released, the air expands again, increasing the weight of water displaced and the diver again becomes positively buoyant and floats.
When shooting larger fish, the diver can let go of his gun and play the fish from the float line, giving the fish more room to tire and preventing it from tearing off the spear or dragging the spearfisher under the water.
When underwater, a diver often needs to be neutrally buoyant so that the diver neither sinks nor rises.
When gas is not added to the BC during a descent, the gas bubble in the BC decreases in volume due to the increasing pressure, resulting in faster and faster descent with depth, until the diver hits the bottom.
When a weight integrated BCD is removed on the surface a diver wearing no weight-belt and any type of foamed neoprene wetsuit will remain very buoyant.
When the diver starts to breathe in, the inhalation lowers the pressure inside the chamber, which moves the diaphragm inwards operating a system of levers.
When the chamber is full and the lowering of pressure has been reversed, the diaphragm expands outwards to its normal position to close the medium pressure valve when the diver stops breathing in.
When the diver exhales, one-way valves, made from a flexible and air-tight material, flex outwards under the pressure of the exhalation allowing gas to escape from the chamber.
When the air supply is shut off, and the flow stops, the gauge indicates the pressure at the open end at the diver.
When the diver needs to switch over to bailout gas he simply opens the bailout valve and the gas is supplied to the helmet or mask.
When working in mid-water the diver may wish to be neutrally buoyant or negative, and when working on the bottom he will usually want to be several kilos negative.
When large amounts of weight are needed, a harness may be used to carry the load on the diver's shoulders, rather than around the waist, where it may tend to slip down into an uncomfortable position if the diver is working in a vertical posture, which is often the case.
When the working diver is using a helmet, the standby diver will often use a full face mask or bandmask, as this makes it quicker to get into the water in an emergency.
When the standby diver is sent in he will normally follow the umbilical of the diver who is in trouble, as unless it has been severed, it will reliably lead to the correct diver.
When divers must work in hazardous environments such as sewage or dangerous chemicals, a helmet ( usually of the free-flow type or using a series exhaust valve system ) is sealed to a special drysuit ( commonly made of a fabric with a smooth vulcanised rubber outer surface ) to completely isolate and protect the diver.
When and inhales
When Kirby inhales an enemy or object, it remains in his mouth.
When Kirby inhales an enemy, it can be spit back out as a projectile, or swallowed.
When and quantity
When one quantity was measured, and became determined, the conjugated quantity became indeterminate.
When plants fix atmospheric carbon dioxide () into organic matter during photosynthesis they incorporate a quantity of that approximately matches the level of this isotope in the atmosphere.
When used in larger quantity, spices can also contribute a substantial amount of minerals, including iron, magnesium, calcium, and many others, to the diet.
When only a sample of data from a population is available, the population standard deviation can be estimated by a modified quantity called the sample standard deviation, explained below.
When consumers increase the quantity demanded at a given price, it is referred to as an increase in demand.
When cardinal utility is used, the magnitude of utility differences is treated as an ethically or behaviorally significant quantity.
When it is added, that the quantity of grain gained from the superior powers of the machine is fully equal to a twentieth part of the crop, and that, in some cases, the expense of thrashing and cleaning the grain is considerably less than what was formerly paid for cleaning it alone, the immense saving arising from the invention will at once be seen.
When Jupiter's South Equatorial Belt disappeared, one hypothesis put forward by Glenn Orten was that a large quantity of ammonia cirrus clouds had formed above it, hiding it from view.
When the uncertainty represents the standard error of the measurement, then about 68. 2 % of the time, the true value of the measured quantity falls within the stated uncertainty range.
When speaking of a " 10 % rise " or a " 10 % fall " in a quantity, the usual interpretation is that this is relative to the initial value of that quantity.
When the girl insisted, the woman threw a dish of lentils into the ashes for her to pick up, guaranteeing her permission to attend the festival, and when the girl accomplished the task in less than an hour with the help of two, white doves sent by her mother from Heaven, the stepmother only redoubled the task and threw down even a greater quantity of lentils.
When the berries are ripe, they are tender and difficult to pick in any quantity without squashing them.
When making herbal remedies, these phenols can serve as markers for the quantity of raw echinacea in the product.
When these techniques are used, lookahead is not a precisely defined quantity, but instead either the maximum depth searched or some type of average.
When Elizabeth I ascended the throne in 1558, England was an impoverished country, in religious turmoil, and with a coinage which was in a poor state after Henry VIII's debasement, since when little had been done to improve either the quantity or quality of the coins in circulation.
When soap making, sodium hydroxide cannot be substituted with potassium hydroxide and vice versa because soap making recipes will have different quantity requirements for these two chemicals depending on the kind of soap being manufactured.
When the value of a large quantity of items has a Zipf's law distribution,
When the harvest time came, and many presses were wanted concurrently and suddenly, he let them out at any rate he pleased, and made a large quantity of money.
When the harvest-time came, and a sharp increase in demand for the use of the olive presses outstripped supply, he sold his future use contracts of the olive presses at a rate of his choosing, and made a large quantity of money.
When stock of a particular component is depleted by the quantity assigned on kanban card, a " kanban trigger " is created ( which may be manual or automatic ), a purchase order is released with predefined quantity for the vendor defined on the card, and the vendor is expected to dispatch material within lead time.
When Zhuge Dan launched a massive full-scale rebellion, the Wu forces suffered a great defeat as they lent a great quantity of manpower to Zhuge Dan's cause.
0.275 seconds.