FACTOID # 21: 15% of Army recruits from South Dakota are Native American, which is roughly the same percentage for female Army recruits in the state.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Full face diving mask
A diver in a pool wearing an AGA full face mask
Enlarge
A diver wearing an Ocean Reef full face mask

A full-face diving mask is a type of diving mask worn by SCUBA divers so that they can talk with the surface or other divers. A Scuba diver in a pool. ... A Scuba diver in a pool. ... An Ocean Reef full face diving mask I took this photo myself with a camera This image has been released into the public domain by the copyright holder, its copyright has expired, or it is ineligible for copyright. ... An Ocean Reef full face diving mask I took this photo myself with a camera This image has been released into the public domain by the copyright holder, its copyright has expired, or it is ineligible for copyright. ... A diving mask A diving mask is an item of diving equipment that allows the SCUBA diver to see underwater. ... SCUBA is an acronym for Self-Contained Underwater Breathing Apparatus. ...


The diver can speak and hear inside the mask. This allows communications equipment to be installed in the mask and is very useful for working divers.


Some fullface masks have a mouthpiece inside: with those, if the mask floods, the diver can breathe again before clearing the mask; but the mouthpiece is strapped in like a gag, making his speech very distorted. Wikipedia does not yet have an article with this exact name. ...


Without a mouthpiece inside the mask, the diver can talk fairly clearly, but if the mask floods, he cannot breathe until the mask is cleared. There also is the problem of "dead space" inside the mask causing risk of carbon dioxide retention. CO2 retention is a pathophysiological state in which too much carbon dioxide is accumulated in the blood. ...


There also is the problem of the inside of the mask window misting. Some masks are designed so that when the wearer breathes in, the inflow of air blows over the inside of the mask window and tends to evaporate any mist deposit on it.


External Links

Scuba Mask Reviews (http://www.thescubaguide.com/d/-2-1.aspx) at the Scuba Guide. An independent resource for the cautious consumer. Read and submit user reviews of diving masks.


See also


  Results from FactBites:
 
Reference.com/Encyclopedia/Full face diving mask (905 words)
A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece or demand valve that provides the diver with breathing gas.
Full face masks can be more secure than breathing from an independent mouthpiece; if the diver becomes unconscious or suffers an oxygen toxicity convulsion, the diver can continue to breathe from the mask unlike a mouthpiece which must be always gripped between the teeth.
They are relatively rarely used in recreational diving, where they protect the face from cold water or stings, such as from jellyfish or coral, and prevent the discomfort derived from gripping a mouthpiece between the teeth for long periods.
Full face diving mask - Wikipedia, the free encyclopedia (822 words)
Full face masks can be more secure than breathing from a mouthpiece, which must be gripped between the teeth, if the diver becomes unconscious.
Full-face diving masks are used in professional diving, to allow the diver to communicate with the surface and to protect the diver's face from polluted water.
In recreational diving, they are also used to protect the face from cold water or stings, such as from jellyfish or coral, and to prevent the discomfort derived from gripping a mouthpiece between the teeth for long periods.
  More results at FactBites »

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m