SCUBA

History of Diving 4500 years ago the ancient Greeks, using newly developed glass, made facemasks and used them to dive for ornamental shells. HISTORY 4 min

Diving Chamber The diving chamber was a huge barrel that contained a limited supply of air attached to a ship, limited movement. weird diving suits

Diving Suit The Diving Suit (1873)was made of watertight canvas heavy metal helmet. Air was pumped from the surface Limited movement, attached to the ship. commercial diving today

“12 Steps to Honor” DIVE SCENE accident Court Scene His story (7 min)

History Jonathan bird Dive helmet limitations dive helmet dive

1878- Henry Fleus –invents a self contained underwater breathing unit

1925- Yves Le Prieur releases more advanced unit

1943- Jacques-Yves Cousteau and Emile Gagnan design and test the first aqua-lung his life Scuba inventions

Redesigned a car regulator

SCUBA SCUBA- self contained underwater breathing apparatus It allowed for greater movement and freedom underwater.

Hugh Bradner, a University of California, Berkeley physicist invented the modern wetsuit in 1952

Summary Advances in technology, especially in the past 150 years, have given people the ability to explore the ocean: at greater depths for longer periods of time with more safety and mobility

make your own scuba

Carl's story

The History of Diving The History of Scuba DivingJacques Cousteau & Other Inventors Modern scuba diving gear consists of one or more gas tanks strapped to the divers back, connected to an air hose and an invention called the demand regulator. The demand regulator controls the flow of air, so that the air pressure within the diver's lungs equals the pressure of the water. Early Diving Gear Ancient swimmers used cut hollow reeds to breathe air, the first rudimentary snorkel used to enhance our abilities underwater. Around 1300, Persian divers were making rudimentary eye goggles from the thinly sliced and polished shells of tortoises. By the 16th century, wooden barrels were used as primitive diving bells, and for the first time divers could travel underwater with more than one breath of air, but not much more than one.

More Than One Breath In 1771, British engineer, John Smeaton invented the air pump. A hose was connected between the air pump and the diving barrel, allowing air to be pumped to the diver. In 1772, Frenchmen, Sieur Freminet invented a rebreathing device that recycled the exhaled air from inside of the barrel, this was the first self-contained air device. Freminet's invention was a poor one, the inventor died from lack of oxygen after being in his own device for twenty minutes.In 1825, English inventor, William James designed another self-contained breather, a cylindrical iron "belt" attached to a copper helmet. The belt held about 450 psi of air, enough for a seven-minute dive.

In 1876, Englishmen, Henry Fleuss invented a closed circuit, oxygen rebreather. His invention was originally intended to be used in the repair of an iron door of a flooded ship's chamber. Fleuss then decided to use his invention for a thirty-foot deep dive underwater. He died from the pure oxygen; oxygen is toxic to humans under pressure.

Rigid Diving Suits In 1873, Benoît Rouquayrol and Auguste Denayrouze built a new piece of equipment a rigid diving suit with a safer air supply, however it weighed about 200 pounds.

Houdini Suit - 1921 Famous magician and escape artist, Harry Houdini (born Ehrich Weiss in Budapest, Hungary in 1874) was also an inventor. Harry Houdini astonished audiences by escaping from handcuffs, straitjackets, and locked boxes, often doing so underwater. Houdini's invention for a diver's suit permitted divers, in case of danger, to quickly divest themselves of the suit while submerged and to safely escape and reach the surface of the water.

Jacques Cousteau

SCUBA Gear Videos for PPT\How SCUBA Works.flv

Class Work Read pages 15 (bottom)- 20. Answer section review questions 1-3 on page 20.