"A wedding anniversary is the celebration of love, trust, partnership, tolerance and tenacity. The order varies for any given year."Paul Sweeney
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Jujitsu: History, Philosophy And Methods
Brief History: Jujitsu is a 2500 year old unarmed combat discipline that has its roots in ancient Japan. The exact date on the creation of this martial art form is hard to trace but techniques resembling that of Jujitsu had already been incorporated into ...
Odds & Ends (Jan 11)
Super Bowl XL still is nearly a month away and football fans don't even know who the combatants will be. Nevertheless, the Las Vegas Hilton -- which attempts to be first with the most for bettors throughout the valley -- has posted odds on the NFL's ...
Perform On A ProForm Treadmill
Proform treadmills may be just the right kind of treadmill for you. If you are looking for treadmills that will last, Proform treadmills are definitely a consideration.One of the nice things about Proform treadmills are the choices you will have in the ...
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Skin squeeze is one of the barotrauma problems which divers can suffer due to the pressure factors involved in the practice of the sport. This way, a barotrauma can be caused due to the differences between the pressure of the water and the surface pressure to which the diver's body is adequate and used to. Barotraumas include problems such as external, inner and middle ear squeeze, eye squeeze, skin squeeze, sinus squeeze and lung squeeze.
While being into the water, a diver is in a heavier environment than when he is in the surface due to the fact that water is a denser medium than air. The relationship between the density of the environment, its pressure and the way it affects the human body are explained through several physic laws, among which we can specifically find Boyle's law, Dalton's law and Henry's law.
These physic laws explain that there is a constant relationship among the volume and the pressure multiplication. This way, it explains that the way in which the deeper a diver goes into the water, the more
pressure he will be exposed to. Therefore, whenever they wish to go deep into the water, divers should have this law in mind and take the precautions necessary to avoid the effects which this pressure increase can have on them.
According to Boyle's law, while the pressure of the water increases as we go deeper the volume of the gases decrease. This way, when a diver goes deeper into the water, the air which might exist between his suit and his skin or into his mask would decrease and this could cause him to suffer a skin squeeze.
This way, skin squeeze can happen as a consequence of a change in volume in the air enclosed against the diver's skin. Most of the times, when this happens at an area covered by the diving suit it is called suit squeeze and usually happens to divers who are wearing a dry diving suit and it becomes tight around a specific skin area due to the air volume reduction.
About the Author
Jakob Jelling is the founder of http://www.divepilot.com. Please visit his website to discover the world of diving!
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