History Of Diving

Diving is today one of the sports that the fastest growing world, and has always existed human desire to descend below the surface of the sea , lakes , either for rescue , hunting , recreation or military purposes .Today it can not be determined with certainty when diving for the first time appeared.

The first material evidence exists in the Assyrian relief , and early and authentic record in the writings of the Greek historian Herodotus.

Diving has also been motivated by military reasons , and so divers Alexander the Great in the port of Tyre after a siege of removing obstacles.

 

The most important work of divers in the past was to salvage the cargo from sunken ships and about how there are written records .Already during the first century , the work was so well organized and divers were classified in salary scales by which the differences in fees depended on the depth of the dive .Diving was exclusively on the breath , and the training is to start on even in childhood . 
Stones was used instead of a weight , the diver would have been tied with ropes , and plunged to 31 meters below the surface.Over time , people asked him how they could stay longer below the surface , and at first began to serve the reed , and at the end of the 16th century made ​​the first big step and invented a diving bell with an open bottom , that went weights vertically in the water , allowing the air trapped inside the bell .The data on such a bell dating from the 1531st year .

 

Eighties of the 17th century American William Flips used a system of bells , which are divers provide access to several sources of air , and the 1690th English astronomer Edmond Haley has designed a complicated system by which the amount of air in the bell supplemented by the air intake was associated smaller bells that were placed below it.When the system was set , opening to the valve on the container and the higher the pressure that has acted in a container ( for greater depth ) pushing fresh air to the diving bell .Haley , along with four others , spent an hour and a half at a depth of 18 meters in the river Thames , showing the effectiveness of his invention . 

Englishman John Letbridz was in 1715. The developed " diving envelope " in which the diver stayed inside the " barrel air " , wrapped in leather , glass sight glass and two of the holes in his hands with a waterproof gloves . Letbridz wrote it with his equipment was not possible to operate at a depth of 18 meters and a period of 34 minutes.
However , and this is the diving equipment had the same restrictions as the diving bell , it was not possible maneuvering and lacked the ability of continuous supply of fresh air.
  

Augustus Sib is noted as the inventor of the first practical clothing for diving , although at that time, several scientists experimenting with similar diving innovations , since the extraction of objects from sunken ships was a lucrative business that allowed continued work on new inventions .