Friday, May 23, 2014

Basic Overview Of Dive Shop Atlanta

By Minnie Whitley

Diving equipment is used to explore and work under water. The equipment is often divided into two types: heavy (descend to great depths) and light (shallow depth, and also used for sporting purposes). Diving equipment which can be found at dive shop Atlanta also differ in the way the air inlet works: hose and independent. Nevertheless, the classification reference involves variations in structural features and the type of composition and air mixture used in these systems.

Octopus (or alternate air source): Used only in emergency situations, the octopus replaces the regulator. They are identical in all respects except that the octopus delivers 0.5 bar. Compressed air cylinders used by most divers weigh between twelve to fifteen pounds and store approximately 2,400 liters of compressed air. The mechanism that allows underwater breathing is the regulator. Each cylinder has a kind of pressure gauge which is the operational limit for the filling.

History of diving equipment dates back to the Middle Ages, when the researchers used a technical device called the diving bell. Its essence is that when immersed, air remains inside the bell, which is enough for man to work underwater for some time. In 1689, Denis Papin proposed to add a powerful piston pump to the diving bell, which would replenish air used.

A snorkel works with or without valves. The tube with self - draining valve is not very advisable for spearfishing, since the noise that it causes is enough to scare the fish away. The diving mask gives a clear view of the seabed to the diver because light rays can not be focused without the presence of a layer of air before the eyes.

Another curious effect of sight in the sea entails the apparent alignment of objects by about 25% and even higher proportion. Thus, if a diver sees a fish that is one meter away, he must understand that the actual distance will be something around 75 centimeters. This effect is known as refraction.

Since no arms are used in underwater swimming leg movement is responsible for the displacement of water. Made of rubber or silicone, the fins may be of two designs: open heel, which almost always requires the use of a boot inside the fin and a closed heel. They vary in size according to use, as a rule there is the large (jumbo) for snorkeling, since higher speed is required for the diver to reach the desired depth. And there is no air supply beyond the limits of lungs.

The energy intensity of regenerative systems directly affects the length of stay underwater. The maximum immersion depth depends not only on the design features, but also on the composition of breathing mixtures. The main elements of the device are injector regenerative box and removable valve switching. There is an option to remove the injector - regenerative device, thus obtaining the usual three-bolt equipment. Air- oxygen equipment allows the diver to descend to a depth of 100m. It is usually deployed at deep sea diving stations and on rescue and salvage boats.

There are knives of varying sizes, although big knives can become a nuisance. Moreover, the reduced options are not as effective for certain tasks. Knives are usually made of stainless steel (alloy 306, 420, 440, etc.) or titanium. The stainless steel blades have higher hardness than the titanium but are more susceptible to corrosion by sea water. The greater the number of stainless steel alloy, the greater its ability to retain the cutting edge, but lower its corrosion resistance .

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