"The Bends"


 Background Information Page

 Lab Report Page

 Display of Results

 Analytic Essay

Five-Gas Diving Mixture

 Photograph of us



 St. Matthew's DEEP Page


 Title page
 Thank You's

Chemist William Henry

Picture From:http://www.brittanica.com/eb/article?eu=40914

Chemist John Dalton

Picture from: http://home.inforamp.net/~schwartz/toppage42.htm

  When a diver is breathing underwater, the non-usable gasses, most importantly Nitrogen, that the diver breathes dissolve into the bloodstream, and stay there while under that pressure. A huge diving problem known as "The Bends" occurs when a diver changes the pressure he is in too quickly by surfacing, and causing gasses to bubble out of the stream and collect in the body. It usually collects in the joints, causing pain, but can also be lethal. In the 19th century, two chemists named William Henry and John Dalton formulated two separate laws that explain why this happens. These laws explain the pressures of parts of the gas, and it's ability to dissolve in and out of liquids. Our goal is to find what gasses would be the best combination for diving, and what gas quantities and types cause "The Bends" fastest. To complete this, many objects were used to represent parts of the body.