Chemistry behind underwater diving
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https://en.wikipedia.org/wiki/Scuba_diving
Table of contents
Introduction
Underwater diving has been a fascination of mankind for hundreds of years yet we have only recently figured out how. This is through the invention of scuba gear. Generally this is believed to be just a large can filled with oxygen which you could use to breathe through. However it isn’t quite that simple. Due to underwater pressure and a variety of other problems the invention of scuba was a complicated and difficult one.
The main reason why our ancestors couldn’t swim underwater (other than not having gills) was due to a lack of knowledge about gases and their behaviour. One …show more content…
He also noticed that greater temperature means higher pressure. Thus Boyle’s law was created. P1V1=C=P2V2
C= a constant (same temperature and number of moles) 1678 Dr Panthot Recorded the salvaging of ships off the coast of Spain using diving bells. This is believed to be the first time in history of using underwater diving technology used for commerce.
1715 John Lethbridge Created a diving engine that could go down 20 metres and hold 30 minutes worth of oxygen. Had two arm holes to salvage ships.
1787 Jacques Charles Through experimentation found that volume at a pressure constant is directly proportional to Kelvin temperature. V/T=C OR V1/T1=V2/T2
1788 John Smeaton Engineered the first modern diving bell that uses a tube and pump. This allows air to be pumped into the diving bell allowing it to be completely submerged.
1803 John Dalton John Dalton was a remarkable chemist who studied and discovered a wide variety of things. It was Dalton who theorized in a mixture of gases that each gas has a partial pressure it emits and the sum of partial pressures is equal to the total pressure. …show more content…
This law states that the number of moles of a gas in a certain volume is equal to the number of moles in another container filled with gas, if it has the same volume with temperature and pressure kept constant. V1/n1=V2/n2
1825 William James Engineered first workable scuba. It uses a cylinder around the divers’ chest area that works as an air container.
1839 Unknown Divers attempting to salvage ships using early diving gear reported to have symptoms such as rheumatism and nausea. This are the first recorded signs of what is now known as decompression sickness
1878 Paul Bert Wrote a thousand page book about how decompression sickness is due to nitrogen gas bubbles forming in the body.
1917 Large group of engineers under the supervision of the U.S Bureau of construction and repair Created mark V diving helm. Gets attached to a diving suit and cord. One of the greatest scuba inventions in history. Allows users to go far deeper and stay submerged for longer than any other diving helm has permitted.
1924 U.S Bureau of navy and mines Experiment on using helium and oxygen gas mixtures for deep sea diving. 1950 NA Diving using diving gear becomes more popular and
Name:
Date:
Teacher:
https://en.wikipedia.org/wiki/Scuba_diving
Table of contents
Introduction
Underwater diving has been a fascination of mankind for hundreds of years yet we have only recently figured out how. This is through the invention of scuba gear. Generally this is believed to be just a large can filled with oxygen which you could use to breathe through. However it isn’t quite that simple. Due to underwater pressure and a variety of other problems the invention of scuba was a complicated and difficult one.
The main reason why our ancestors couldn’t swim underwater (other than not having gills) was due to a lack of knowledge about gases and their behaviour. One …show more content…
He also noticed that greater temperature means higher pressure. Thus Boyle’s law was created. P1V1=C=P2V2
C= a constant (same temperature and number of moles) 1678 Dr Panthot Recorded the salvaging of ships off the coast of Spain using diving bells. This is believed to be the first time in history of using underwater diving technology used for commerce.
1715 John Lethbridge Created a diving engine that could go down 20 metres and hold 30 minutes worth of oxygen. Had two arm holes to salvage ships.
1787 Jacques Charles Through experimentation found that volume at a pressure constant is directly proportional to Kelvin temperature. V/T=C OR V1/T1=V2/T2
1788 John Smeaton Engineered the first modern diving bell that uses a tube and pump. This allows air to be pumped into the diving bell allowing it to be completely submerged.
1803 John Dalton John Dalton was a remarkable chemist who studied and discovered a wide variety of things. It was Dalton who theorized in a mixture of gases that each gas has a partial pressure it emits and the sum of partial pressures is equal to the total pressure. …show more content…
This law states that the number of moles of a gas in a certain volume is equal to the number of moles in another container filled with gas, if it has the same volume with temperature and pressure kept constant. V1/n1=V2/n2
1825 William James Engineered first workable scuba. It uses a cylinder around the divers’ chest area that works as an air container.
1839 Unknown Divers attempting to salvage ships using early diving gear reported to have symptoms such as rheumatism and nausea. This are the first recorded signs of what is now known as decompression sickness
1878 Paul Bert Wrote a thousand page book about how decompression sickness is due to nitrogen gas bubbles forming in the body.
1917 Large group of engineers under the supervision of the U.S Bureau of construction and repair Created mark V diving helm. Gets attached to a diving suit and cord. One of the greatest scuba inventions in history. Allows users to go far deeper and stay submerged for longer than any other diving helm has permitted.
1924 U.S Bureau of navy and mines Experiment on using helium and oxygen gas mixtures for deep sea diving. 1950 NA Diving using diving gear becomes more popular and