Diving into the Unknown

1
Diving into the Unknown

• Team Anonymous
• Elvin Pathiyil
• Mariya Gudima
• Michael Gutierrez

2
Project

• Anonymous plans to research the manufacturing of
  SCUBA gear. Anonymous will also research how
  different water depths affect the gear as well as
  the body. Also, the affects of temperature on the
  gear will be researched, as well as the most
  efficient combination of gases in the gear at
  various water depths.

3
Scuba

• Scuba diving is the act of swimming underwater
  while using
• Self
• Contained
• Underwater
• Breathing
• Apparatus

4
History Of SCUBA

• First arose during World War II and originally
  used to refer to USA combat frogmen's oxygen
  rebreathers.
• Scuba in modern times usually refers to the
  in-line open-circuit equipment

5
Types of scuba sets 1

• open-circuit
• a type of SCUBA-diving equipment where the user
  breathes from the set and then exhales to the
  surroundings without recycling the exhaled air

6
Types of scuba sets 2

• closed-circuit/semi-closed circuit
• Here the diver breathes in from the set, and out
  back into the set where the exhaled gas is
  processed to make it fit to breathe again.

7
Wet Suit

• Cold-water wetsuits are built differently, have
  seams which do not leak, and provide good
  protection from cold water up to 60 minutes in
  shallow water.

8
Dry suit

• provides thermal insulation to the wearer while
  immersed in water
• protects the whole human body, except the head,
  hands, and possibly the feet

9
Gas mixtures

• Normal atmospheric air
• (21 oxygen, 78 nitrogen, 1 other) can be used,
  so long as the diver is properly trained in their
  use.
• Enriched Air Nitrox
• which is air with extra oxygen, often with 32 or
  36 oxygen, and thus less nitrogen, reducing the
  effect of decompression sickness and nitrogen
  narcosis.

10
Decompression sickness

• Decompression sickness (DCS), the divers
  disease, the bends, or caisson disease is the
  name given to a variety of symptoms suffered by a
  person exposed to a decrease in the pressure
  around the body.

11
Nitrogen narcosis

• Aka inert gas narcosis is a reversible change in
  consciousness producing a state similar to
  alcohol intoxication in scuba divers at depth. It
  occurs to some small extent at any depth, but in
  most cases doesn't become noticeable until deeper
  depths, usually from 30 to 40 meters.

12
Oxygen toxicity

• occurs when oxygen in the body exceeds a safe
  partial pressure. In extreme cases it affects the
  central nervous system and causes a seizure,
  which can result in the diver spitting out his
  regulator and drowning. Oxygen toxicity is
  preventable provided one never exceeds the
  established maximum depth of a given breathing
  gas.