Gue Vs Tdi

[nova]

If you're going to split hairs... neither.

Wow, it is fun to play stupid games like this.

and you would be wrong . what's the WINDOW? does it open and close? or is it just a mind game that's played . my bets on junk science

 

[cornfed]

and you would be wrong . what's the WINDOW? does it open and close? or is it just a mind game that's played . my bets on junk science

I'm confused, which argument are we having? You asked,

do you have a percentage of oxygen in your body or do you have a pressure of oxygen ?

I said neither because you don't have either a pressure or a percentage. You have a certain quantity (ie number of moles) of oxygen in your body. Concepts like percentage or pressure are useful for dealing with how your particular quantity of something relates to some other quantity, but they don't tell you anything about actual quantity.

If you want to discuss whether or not the term "oxygen window" is valid nomenclature we can certainly do that. But that really doesn't have any bearing on my answer to your question regarding whether I have a precentage or pressure of oxygen in my body, now does it?

 

[nova]

I'm confused, which argument are we having? You asked,I said neither because you don't have either a pressure or a percentage. You have a certain quantity (ie number of moles) of oxygen in your body. Concepts like percentage or pressure are useful for dealing with how your particular quantity of something relates to some other quantity, but they don't tell you anything about actual quantity.

If you want to discuss whether or not the term "oxygen window" is valid nomenclature we can certainly do that. But that really doesn't have any bearing on my answer to your question regarding whether I have a precentage or pressure of oxygen in my body, now does it?

" One of the more common mistakes is to say that the body reguires a certain PERCENTAGE of oxygen. The truth is, the body requires a certain PRESSURE of oxygen. Since most of the traditional information is writen by people sitting on the surface, it is common to think of FRACTION of oxygen to be the same as PRESSURE of oxygen. It is just a quirk of nature since the atmospheric pressure is 1 ata, and any number that is multiplied or divided by 1 is still that number"

I.E when you travel to the mountains the total percentage of O2 is still 21% but it's the ata pressure that changes, as the oxygen pressure changes , this can cause headache and shortness of breath. This is known as HYPOXIA , a condition brought on by to little oxygen

 

[cornfed]

when you travel to the mountains the total percentage of O2 is still 21% but it's the ata pressure that changes, as the oxygen pressure changes , this can cause headache and shortness of breath. This is known as HYPOXIA , a condition brought on by to little oxygen

But what a minute... So I need an oxygen pressure of 0.21 ATA at sea level, check. And if I go up a mountain to where the the total pressue is 0.5 ATA then I'll still have a oxygen precentage of 21% but only have an oxygen pressure of 0.105 ATA, check. But I don't want to get a headache from hypoxia so I bring a bottle EAN42 with me. Now I'm breathing PO2 of 0.21 again and my headache is gone. Great! Now, why did my headache go away? Was it because I'm now getting the same pressure of oxygen or the same amount of oxygen that I was at sea level?

 

[pennypue]

POPCORN!!! BRING ME MY POPCORN!!!!!!!!

:madamy:

 

[nova]

But what a minute... So I need an oxygen pressure of 0.21 ATA at sea level, check. And if I go up a mountain to where the the total pressue is 0.5 ATA then I'll still have a oxygen precentage of 21% but only have an oxygen pressure of 0.105 ATA, check. But I don't want to get a headache from hypoxia so I bring a bottle EAN42 with me. Now I'm breathing PO2 of 0.21 again and my headache is gone. Great! Now, why did my headache go away? Was it because I'm now getting the same pressure of oxygen or the same amount of oxygen that I was at sea level?

I just quoted from the physiological principles of diving. If you can't understand that then there is nothing I can tell you that will change your mind. You ask me not to come across as holier than thow, you ask me to state my case , Ive even let the "stupid arguement" comment slip by. But I can now say ,that there is nothing that I can do here, to help make others understand simple diving principles

Cornfed , you disappoint me, and I find it discouraging even to post on boards where the members can't see logic because of an agency affiliation.

 

[MXGratefulDiver]

OK folks, it's been an entertaining discussion, but comments on both sides are starting to suggest that the horse is dead ... perhaps it's time to consider a funeral ...

... Bob (Grateful Diver)

 

[cornfed]

I just quoted from the physiological principles of diving. If you can't understand that then there is nothing I can tell you that will change your mind. You ask me not to come across as holier than thow, you ask me to state my case , Ive even let the "stupid arguement" comment slip by. But I can now say ,that there is nothing that I can do here, to help make others understand simple diving principles

Cornfed , you disappoint me, and I find it discouraging even to post on boards where the members can't see logic because of an agency affiliation.

With all due respect, It apears to me that you have quoted something which you do not fully understand. If you'd like I will answer my own question regarding amount vs pressure. If you want to write me off as a mindless lemming who's too blinded by dogma to understand logic and science, well then so be it. The choice is your's...

 

[nova]

With all due respect, It apears to me that you have quoted something which you do not fully understand. If you'd like I will answer my own question regarding amount vs pressure. If you want to write me off as a mindless lemming who's too blinded by dogma to understand logic and science, well then so be it. The choice is your's...

with respect right back at ya, please , I would like you to answer your own question about amount vs. pressure

 

[diverbrian]

OK folks, it's been an entertaining discussion, but comments on both sides are starting to suggest that the horse is dead ... perhaps it's time to consider a funeral ...

... Bob (Grateful Diver)

Hey Bob,

Need a bugler to play "Taps" here?