 |
Scuba Diving Gear and Diving Lessons
Welcome
to masterdiving.com! Scuba diving is one of the most popular recreational
activities in the world, and for good reason. Nothing else offers you
the opportunity to see the vast variety of life up close and personally.
A coral reef makes one of the best diving attractions because it offers
such a diverse selection of sea life all in one place. Other fun diving
sites include ship wrecks and the continental shelves.
Scuba diving is a safe activity, but only when a diver knows and obeys
the rules of the ocean. Most of the rules are common sense. Don’t
touch the wildlife, don’t take things that don’t belong
to you, and be courteous to the other life you meet. Other rules may
seem odd to anyone who isn’t familiar with the science of diving.
One of the guides divers follow, a decompression table, is something
that requires a thorough explanation. If you’ve ever opened a
soda bottle before, you may have marveled at the way bubbles seemingly
appear of an inert liquid. This is due to pressurized dissolution of
the bubbles. Now you may be asking yourself what the hell does that
mean?! What it means is that at high pressure, gasses can be dissolved
into a liquid medium and stored within it. They will remain dissolved
and inert as long as that pressure is maintained.
What does that have to do with diving you may ask? Well a human being
cannot breathe air that isn’t at the same pressure as the surrounding
atmosphere. At all times when our atmosphere is the air, this seems
like a meaningless statement to make. However once we go under water,
we have changed both our atmosphere’s composition, and its pressure.
So in order to breathe while underwater, we have to breathe pressurized
air.
Do you see the connection yet? If not, keep reading. Because we are
breathing pressurized air, the nitrogen within the air dissolves into
our blood stream, just like the carbon dioxide in our soft drinks. As
long as we remain in that pressurized environment, the nitrogen stays
dissolved and inert. As soon as we begin removing the pressure however;
the nitrogen will bubble out of our blood just like the CO2 coming out
of the soda. A decompression table is a schedule with regular breaks
to allow the nitrogen to breathe out of our blood as we ascend from
depth. These breaks are necessary to prevent the nitrogen from damaging
our internal organs when it comes out.
That is just one example of the highly technical sort of rule that most
divers follow, the type that could seriously injure you if you fail
to follow it. Other rules are enforced by equipment. For instance you
would not be able to see underwater without a piece of diving equipment
known as a diving mask. It has lenses designed to refocus the light
entering your eyes so that you can make sense of what you see.
There’s the most obvious piece of equipment, your air supply.
It includes several subtle features that you may not think of when you
strap the tanks to your back. Remember when I mentioned above that we
have to breathe air at atmospheric pressure for or lungs to work? Well
the air supply line has built in sensors that adjust the pressure of
the air you receive so that it is at atmospheric pressure, no matter
what depth you descend to.
It’s important that all your scuba
gear or surf wear is in good working condition, because you don’t want to
be struck by an equipment failure while you’re 100 feet down. Such
accidents are avoidable, as long as you are inspecting your gear before
you dive. Remember, be safe, and don’t forget to have fun while
diving!
|
 |