Snorkeling, diving and deep-sea diving is the act by which man is immersed in water bodies, either the sea, a lake, a river, a flooded quarry or pool, in order to develop a vocational, recreational, scientific or military research activity. The traditional dive (without breathing apparatus) is simply called diving, although the sporting variant is called snorkeling grace bay beach.
The term defines exactitude scuba diving in the sea, which is also and by far the most practiced diving worldwide. When practiced in caves or flooded mine shafts it is called cave diving and diving in mountain lakes - high dive. In almost all modes that use breathing apparatus the most widely used is the scuba (a regulator fed by one or more bottles of compressed air).
It is the simplest form and oldest diving method employed by man, and appears in various regions and cultures to exploit food sources (fish, crustaceans and molluscs), useful resources (algae, sponges, corals) and resources of cultural value or economic (beads). The scuba diver using a compressed air bottle that lets you go breathing the stored air, giving it considerable autonomy (usually around an hour).
There is evidence that free diving has been practiced for thousands of years for food or wealth (or coral beads, for example) and also for military purposes. Scuba diving, wearing a helmet and breathing surface-supplied air, began to develop during the second half of eighteenth century, but especially from the early nineteenth century and continues today using similar techniques.
The snorkel is a fairly flexible plastic tube rod-shaped that allows you to breathe with your face underwater. Divers use in apnea, and is part of mandatory equipment for recreational divers who used to breathe when you are on the surface, thus saving the air from his bottle. There are a variety of snorkels to facilitate expelling water through tube trap waves, which prevent water from entering the open, rigid, flexible end.
But it was not until 1942 that the technology would make a giant leap and definitely allow man to dive independently from the surface. In that year Emile Gagnan (engineer employed at Air Liquide, Paris company specializing in compressed gases) miniaturized one regulator to suit gasifier car engines, as the Germans occupied France and confiscated all gasoline. Henri Melchior, father of Jacques-Yves Cousteau and owner of Air Liquide, thought then that this regulator might be useful to his son Cousteau. Melchior knew that the latter was trying to develop a underwater breathing system to grant full autonomy to the diver.
He introduced the two men in Paris in December 1942 and they started working together. Within weeks, in early 1943, they honed a first prototype controller in factories. Cousteau made the first tests of this prototype at the Marne, guarded by Gagnan from the surface. Since then divers escaped from the umbilical cord that kept him bound to the surface.
Dry suits can be of two types: neoprene trilaminates. They reinforced sealing cuffs, ankles, neck and a special zipper that prevent entry of water between the suit and the skin, are more effective than wet, keeping the body out of contact with water, greatly limiting the loss of temperature. An extra complication is that the air inside the suit is under compression, so their compensation must be worked on during the dive as it is done with the air of BCD, for this has valves filling and exhaustion and courses are taught.
The term defines exactitude scuba diving in the sea, which is also and by far the most practiced diving worldwide. When practiced in caves or flooded mine shafts it is called cave diving and diving in mountain lakes - high dive. In almost all modes that use breathing apparatus the most widely used is the scuba (a regulator fed by one or more bottles of compressed air).
It is the simplest form and oldest diving method employed by man, and appears in various regions and cultures to exploit food sources (fish, crustaceans and molluscs), useful resources (algae, sponges, corals) and resources of cultural value or economic (beads). The scuba diver using a compressed air bottle that lets you go breathing the stored air, giving it considerable autonomy (usually around an hour).
There is evidence that free diving has been practiced for thousands of years for food or wealth (or coral beads, for example) and also for military purposes. Scuba diving, wearing a helmet and breathing surface-supplied air, began to develop during the second half of eighteenth century, but especially from the early nineteenth century and continues today using similar techniques.
The snorkel is a fairly flexible plastic tube rod-shaped that allows you to breathe with your face underwater. Divers use in apnea, and is part of mandatory equipment for recreational divers who used to breathe when you are on the surface, thus saving the air from his bottle. There are a variety of snorkels to facilitate expelling water through tube trap waves, which prevent water from entering the open, rigid, flexible end.
But it was not until 1942 that the technology would make a giant leap and definitely allow man to dive independently from the surface. In that year Emile Gagnan (engineer employed at Air Liquide, Paris company specializing in compressed gases) miniaturized one regulator to suit gasifier car engines, as the Germans occupied France and confiscated all gasoline. Henri Melchior, father of Jacques-Yves Cousteau and owner of Air Liquide, thought then that this regulator might be useful to his son Cousteau. Melchior knew that the latter was trying to develop a underwater breathing system to grant full autonomy to the diver.
He introduced the two men in Paris in December 1942 and they started working together. Within weeks, in early 1943, they honed a first prototype controller in factories. Cousteau made the first tests of this prototype at the Marne, guarded by Gagnan from the surface. Since then divers escaped from the umbilical cord that kept him bound to the surface.
Dry suits can be of two types: neoprene trilaminates. They reinforced sealing cuffs, ankles, neck and a special zipper that prevent entry of water between the suit and the skin, are more effective than wet, keeping the body out of contact with water, greatly limiting the loss of temperature. An extra complication is that the air inside the suit is under compression, so their compensation must be worked on during the dive as it is done with the air of BCD, for this has valves filling and exhaustion and courses are taught.
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