Mitt on aircraft windows...

[ElNono]

No.

At 5,000 ft it's 83% of sea level.

At 8,000 ft it's 78% of sea level.

At 10,000 ft it's 69% of sea level.

Where did you get the 1/3rd from anyway?

That doesn't sound right. I know the concentration of oxygen molecules vs nitrogen molecules vs others in a volume of air is constant up to something like 120,000 feet, and the air pressure is something like 59% of sea level at 12,000 feet, which would mean you'd have 59% of O2 to breathe at 12000 vs 0 feet. 1/3rd would be something like high up on Everest.

The percentage of oxygen in the atmosphere does not change with al ude, so it is about 21% at 10 000 feet.

What does change is the pressure. This declines with al ude. At sea level the air pressure is about 101 kPa (kilopascals). Oxygen accounts for 21% of this so the oxygen pressure is 19.6 kPa. This means that there are less oxygen molecules in the same volume of air at higher al udes.

At 10,000 feet the oxygen pressure drops to 7.2 kPa, which is roughly one third of the pressure at sea level.

From here

The 1/3 coming from 7.2 kPA being about one-third of 19.6 kPA...

[ElNono]

Some of you missed the "same air volume" part, tbh

[Agloco]

The percentage of oxygen in the atmosphere does not change with al ude, so it is about 21% at 10 000 feet.

What does change is the pressure. This declines with al ude. At sea level the air pressure is about 101 kPa (kilopascals). Oxygen accounts for 21% of this so the oxygen pressure is 19.6 kPa. This means that there are less oxygen molecules in the same volume of air at higher al udes.

At 10,000 feet the oxygen pressure drops to 7.2 kPa, which is roughly one third of the pressure at sea level.

From here

The 1/3 coming from 7.2 kPA being about one-third of 19.6 kPA...

[ElNono]

Just the third night out a little under 11,000 feet while doing a backpacking trip. I never have had any issues with those kind of al udes other than that one time though (I was sick a couple of weeks before, so I think that may have predisposed me to getting it that trip). The one you can get the first day is AMS, which is no big deal and usually clears up if you don't try to ascend while suffering symptoms. HAPE and HACE you have no other choice than to get to lower al ude quickly though.

The problem with that stuff is that when your blood oxygen level drops below 90% (IIRC), it can cause further damage that could prevent re-oxygenation. You're correct that under HAPE/HACE you're required to drop down at least 1,000 ft and get oxygen, but even when you do that, the inflammation can affect pulmonary functions and make it longer to recover (or not).

[Wild Cobra]

The percentage of oxygen in the atmosphere does not change with al ude, so it is about 21% at 10 000 feet.

What does change is the pressure. This declines with al ude. At sea level the air pressure is about 101 kPa (kilopascals). Oxygen accounts for 21% of this so the oxygen pressure is 19.6 kPa. This means that there are less oxygen molecules in the same volume of air at higher al udes.

At 10,000 feet the oxygen pressure drops to 7.2 kPa, which is roughly one third of the pressure at sea level.

From here

The 1/3 coming from 7.2 kPA being about one-third of 19.6 kPA...

Squrm why don't you.

I was correcting your statement:

Not to mention that the oxygen pressure (the amount of oxygen molecules) in the same air volume at 10,000 ft is about 1/3 of sea-level.

Why are you using wiki answers as fact?

How about something like Engineering Toolbox instead?

[Wild Cobra Kai]

Oh look it's mr scientist elitist rearing his ugly head. If it's so easy then why don't you just go take Mitt's spot at Bain then? You'd make a lot more than whatever the the IAEA is paying you.

I think someone else already took Mitt's spot at Bain, and booted his ass to the curb.

[mavs>spurs]

Ehh Mitt was pretty successful there, and at a pretty young age. You can call him a lot of things..but people don't get that rich by chance. Stupid isn't one of those things you can say about him. Not very well spoken sometimes, maybe.

[Agloco]

Oh look it's mr scientist elitist rearing his ugly head. If it's so easy then why don't you just go take Mitt's spot at Bain then? You'd make a lot more than whatever the the IAEA is paying you.

lol possession oriented people

What? Not everyone gauges their net worth by the size of their bank accounts?

[Wild Cobra]

El NoKnow...

Your numbers approximately match 10,000 meters rather than 10,000 ft.

[Agloco]

Stupid isn't one of those things you can say about him. Not very well spoken sometimes, maybe.

Spin it however you'd like, but he comes across as plenty dumb when it matters tbh. I'd say he's fairly ignorant of physics and physiology as well, but that's only relevant to this latest gem.

[SA210]

[CosmicCowboy]

Personal anecdotes are cute, but there's a reason the FAA mandates cabin pressure to top off at 8,000 ft at the highest plane al ude. You can trigger Hypoxia as low as 5,000 ft. Over 10,000 ft you'll be dealing with physiological problems rather quickly...

Not to mention that the oxygen pressure (the amount of oxygen molecules) in the same air volume at 10,000 ft is about 1/3 of sea-level.

anecdotes

You are such a stupid ing tool.

I've skied double diamond runs in Kachina basin at Taos for day after day at 12,000 feet and sleeping at 10,000. You are full of .

tens of thousands if not hundreds of thousands do the 11,800 lift every year and a lot like me hike higher to get into the more extreme stuff...We are talking average ability people for the most part doing a lot of exertion running on the 11,800 lift.

ing tool. Throw your ing crap out there like you are an expert and forget there are people out there to throw the bull flag.

[ElNono]

I was correcting your statement:

There's nothing wrong with my statement.

Why are you using wiki answers as fact?

How about something like Engineering Toolbox instead?

That actually agrees with my statement. Looks like Mitt wasn't the only layman when it comes to this stuff...

[ElNono]

anecdotes

I've skied double diamond runs in Kachina basin at Taos for day after day at 12,000 feet and sleeping at 10,000. You are full of .

more anecdotes... talk about fool

tens of thousands if not hundreds of thousands do the 11,800 lift every year and a lot like me hike higher to get into the more extreme stuff...We are talking average ability people for the most part doing a lot of exertion running on the 11,800 lift.

more anecdotes...

We're talking millions of people flying airplanes at well over 10,000 ft... *THAT* is what makes the comment patently re ed.

ing tool. Throw your ing crap out there like you are an expert and forget there are people out there to throw the bull flag.

Tell me more anecdotes

[ElNono]

El NoKnow...

Your numbers approximately match 10,000 meters rather than 10,000 ft.

Do tell

[Wild Cobra]

There's nothing wrong with my statement.

Sorry, but there is plenty wrong. Your refusal to acknowledge your mistake, and stay with it would be comical, if it wasn't so sad.

[ElNono]

Sorry, but there is. And your refusal to acknowledge your mistake, and stay with it wou8ld be comical, if it wasn't so sad.

What's wrong about it? This should be good.

[Wild Cobra]

What's wrong about it? This should be good.

I already told you. Your pressures are wrong.

[ElNono]

I already told you. Your pressures are wrong.

How so? Where's the oxygen pressure in the link you posted?

[ElNono]

BTW, the table agrees with the known fact that at sea level, the atmospheric pressure is 101,325 Pa... (shown as 10.13 10^4 N/m2) on the table.

[Wild Cobra]

From here

The 1/3 coming from 7.2 kPA being about one-third of 19.6 kPA...

You should know better than to claim something from any "wiki" link without verification.

Your link is sourced from here.

It says:

The percentage of oxygen in the air at two miles (3.2 km.) is essentially the same as at sea level (21%). However, the air pressure is 30% lower at the higher al ude due to the fact that the atmosphere is less dense--that is, the air molecules are farther apart.

So...

Your wiki expert author takes two miles (10,560 ft) and 30% lower (70%) as meaning only 1/3rd...

Think this expert author may not be so expert, interpreting his source?

That 70% is very close to my 69% using Engineering Toolbox.

[Wild Cobra]

BTW, the table agrees with the known fact that at sea level, the atmospheric pressure is 101,325 Pa... (shown as 10.13 10^4 N/m2) on the table.

Aren't you dizzy yet from your lies?

I show you the truth, yet you hold on to ill informed information?

Why?

[ElNono]

You should know better than to claim something from any "wiki" link without verification.

Says who? You're still have to point out what's wrong with that.

Your link is sourced from here.

No it isn't. It says you can go there for further information.

Your wiki expert author takes two miles (10,560 ft) and 30% lower (70%) as meaning only 1/3rd...

No. The 1/3 comes from 7.2 kPa being about 1/3 of 19.6 kPA, as I already pointed out.

Think this expert author may not be so expert, interpreting his source?

That 70% is very close to my 69% using Engineering Toolbox.

The "Engineering Toolbox" is basically irrelevant to my statement, because it doesn't include oxygen pressure information.

You're still very confused. Keep googling.

[ElNono]

Aren't you dizzy yet from your lies?

I show you the truth, yet you hold on to ill informed information?

Why?

I'm still waiting for you to point out what's wrong... I'll keep playing Borderlands 2 while you keep trying...

Hint: you're not wrong either...

[Wild Cobra]

Why are you so hard headed?

It is so easy to verify what I say. You are looking like a total fool to everyone here.

How about from Spectral Calc?