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They most definitely are. IMNSHO, your error is that you seem (to me) to demand the same exact standards from a high-quality pop sci publication like "Deco for divers" as we should demand from a scientific journal article. Allow me to disagree about that.Of course, my opinions are just MINE.
In other news, water is wet, the Pope is Catholic and bears shít in the woods (and up here, we have scientific evidence for the latter). Film at 11.most publishers are really ripping off scientists of their work, not paying the authors for their author's rights, asking to other scientists to peer-review for free, and finally charging universities and libraries of absurd costs for subscribing to journals or purchasing books.
It is an important concept for divers to get - after the relevant time (allowing for on gassing/ off gassing), we are all saturated at whatever the ambient pressure is at whatever height/depth we are at. At depth we on gas as we go down at a certain rate depending on tissue category and after a certain time we will be fully saturated for that depth and pressure. As we return to the surface, we off gas at a certain rate and eventually will return to surface saturation levels.Thanks for all the help, folks! (. . . and for the additional insight into SI units, I didn't mind one bit.)
For additional clarification, I think the lack of a label on the graph combined with Powell's passing reference to tissues being saturated with nitrogen at the surface was what threw me. (As in, What do you mean we're saturated already? How are we not suffering decompression sickness just by going swimming then?)
I do understand now. Partial pressures are important. Everyone here has totally helped in that regard. Thanks!
Almost....the important quantity is the ambient partial pressure of the gas you are wondering about saturation of, in this case Nitrogen.Right, and we're also holding our breath or breathing atmospheric air, so the saturation levels don't change due to pressure differences. (. . . and am I recalling correctly that it's not just ambieny pressure but the partial pressure of the inspired gas that affects this? . . . I'll need to read the book a second time, it seems.)
Right, and we're also holding our breath or breathing atmospheric air, so the saturation levels don't change due to pressure differences.
Originally released in 2008 but revised in 2014.One comment, that book was written in 2008, since then there has been some interesting studies done as it relates to on/off gassing of HE by the US Navy experimental diving unit and, specifically, Dr. David Doolette.
If you ever get a chance look up some of his lectures at diving symposiums, really interesting guy.