How deep is two atmospheres?

That's the amount of pressure they put me under in the hyperberic chamber.

Now I have to go have a tube implanted in my right ear so I don't blow te eardrum.

This has gotten way past old.

Standard atmospheric pressure at sea level is about 14.7 psi. So for two atmospheres they had you under about 30 psi.

ABout 30'

But...........did it WORK??

Is your infection reduced?
Do you FEEL better?

Interesting. I was guessing around 30 to 35ft. I don't suppose U'll get the bends if the tank cracks eh?

Two atmospheres

Sat,

All depends on whether it was two atmospheres absolute or two atmospheres gauge. These are typically measured as pounds per squate inch absolute (psia) or psig.

At sea level, we are already under 14.7 pounds per square inch of air pressure. Most folks don't think about this because they don't feel it, but 0 psia would be a complete vacuum. One atmosphere is what people at sea level exist in. Two atmospheres absolute would be an additional 14.7 psia (or approximately 33' of sea water). Two atmospheres (gauge) would put you at a total of three atmospheres absolute or roughly 66' of sea water equivilent.

The other thing to understand is the partial pressure of gasses under hyberbaric conditions. You can round off air gas content to 20% oxygen and 80% nitrogen for back of the envelope calculations. If you descend to 33', under air (two atmospheres absolute), you have an effective 40% oxygen partial pressure. At 66' it's 60%, at 99' it's 80%, etc.

Hope this helps and my sincere wishes for good health resolution for you.

Best regards
Doc (former commercial diver amongst other things)

I'm trying to get them to let me experiement with the chamber...like what would happe if I put an air-filled ball inside or maybe a goldfish in a bowl of water....

You've obviously never been SCUBA diving.

Under the sea ain't under sea level in the atmosphere.

As a wild guess, maybe a klick beneath the surface in a South African gold mine?