marcus said:
Hey guys I want to understand this better so help if you can...
Sounds like you understand it just fine. Everything you had there was correct.
Or were they really enfeebled by low oxygen pressure?
No. I've looked into this a little more and apparently, it was just the bulk of the suit and doing a job with a poorly designed tool. For more, I started a thread at BadAstronomy.com on this: http://www.badastronomy.com/phpBB/viewtopic.php?t=15496
Rader said:
If 3.7 psi is in a spacesuite, it can not be pure oxygen, pure oxygen is lethal.
You even have the answer in your post. As a matter of fact, I took the scuba course last month and this is covered. Oxygen (pure or otherwise) is lethal at a certain
pressure. Breathing 3psi pure oxygen and breathing 15psi air gives you exactly the same amount (partial pressure) of oxygen (like marcus said), so its no problem.
Why, my regulator gives me the same amount of oxigen at any depth I go. Yes the volumn intake is greater the deeper you go but your absorbtion through your lungs is proportional to how much work you do.
Your absorption through your lungs of any gas, oxygen included, depends on the partial pressure of that gas. That's why you get the bends: too much nitrogen dissolves in your blood. That's also why, if high enough pressure, oxygen can be toxic: too much oxygen dissolved in your blood. And that's also why with more oxygen, you can do more work: more oxygen dissolved in your blood and available to use for work.
That said, it appears the partial pressure of oxygen in a space suit is roughly equal to sea level, so this isn't an issue.
My implication is only stated facts from the documentary, nothing more.
At the very least, the implication is that something out of the ordinary (besides, of course, walking on the moon for the first time

) was going on. And this quote from earlier suggests you are of the opinion that something
very out of the ordinary was going on.
The reason contains the mystery, why we went to the moon.
So do you or don't you have an opinion?
The documentary gave the explanation not me, I want to know if it is a hoax and you do not convince me yet.
Whatever the documentary claimed, it takes an awful lot more than an out of the ordinary heart rate to prove it and making a claim second-hand doesn't eliminate your burden of proof.