Diving physics 474931 224410631 2008-07-08T18:56:42Z RexxS 6112901 Added pressure-temperature law - see Talk page + changed unreferenced to refimprove {{refimprove|date=July 2008}} These are the laws of physics that govern the physics of the [[Scuba diving|SCUBA diver]] and of diving equipment: * [[Buoyancy]] - when in water, the [[density]] of the materials in the diver's [[human body|body]] and in the diver's [[SCUBA Equipment|equipment]] determine whether the diver floats or sinks * [[Boyle's law]] - as pressure increases the volume of gases in the diver's body and equipment decreases<ref name=acott>{{cite journal |author=Acott, C |title=The diving "Law-ers": A brief resume of their lives. |journal=South Pacific Underwater Medicine Society journal |volume=29 |issue= |date=1999 |issn=0813-1988 |oclc=16986801 |url=http://archive.rubicon-foundation.org/5990 |accessdate=2008-07-07 }}</ref> * [[Amontons' Law]] - as temperature increases the pressure in a [[diving cylinder]] increases (also known as [[Gay-Lussac's_Law#Pressure-temperature_law|Gay-Lussac's law]])<ref>{{cite web |url=http://chemed.chem.purdue.edu/genchem/topicreview/bp/ch4/gaslaws3.html#amonton |title=Amonton's Law |publisher=Purdue University |accessdate=2008-07-08}}</ref> * [[Dalton's law]] - in mixtures of [[breathing gas]]es the concentration of the individual components of the gas mix is measured by [[partial pressure]]<ref name=acott/> * [[Henry's law]] - as pressure increases the quantity of gas adsorbed by the [[biological tissue|tissues]] of the [[human body]] increases, increasing the risk of [[decompression sickness]] * [[Snell's law]] - the index of [[refraction]] of water is similar to that of the [[cornea]] of the [[eye]]—30% greater than air—hence a diver cannot see clearly underwater without a [[diving mask]] with an internal airspace Physical effects of [[water]] or the [[underwater]] environment: * [[Pressure]] - the overall pressure on a diver is the sum of the [[atmospheric pressure]] and the water pressure * [[Density]] - common materials found in [[human body|body]] and in the diver's [[SCUBA Equipment|equipment]] such as [[air]], [[water]], [[steel]] and [[lead]] have widely differing densities. * [[Thermal conductivity]] of water is higher than air * Absorption of [[light]] and loss of [[colour]] underwater * Under pressure, [[gas]]es compress but [[liquids]] do not * [[Gravity|Gravitational]] [[force]]s and the rotation of the [[earth]] cause [[tides|tidal]] currents * Effects of [[weather]] such as [[wind]], which causes [[waves]], and [[temperature]]. == References == {{Reflist}} [[Category:Underwater diving]] [[Category:Physics]] [[Category:Sports science]] [[de:Tauchphysik]] [[no:Dykkefysikk]]