Question on SDI Leadership Manual

[sharkattack]

I was going over Daltons Laws of partial pressures list the percentages of gases in the air we breath and converting them to partial pressures by dividing them (the percentages) by 100.

Trace elements we breath is .1% / 100 = .001 x 2 = .002.

The book had .01 x 2 = .002. No biggie as the answer is right but can be confusing to one whose trying to understand the stuff for the first time and requires reasoning and working the problems backwards.

Ahh yes. Thank you.

 

[Mr. Bubble]

***Now who can put into laymans terms how they derived the pressure ratings for the innertube?

Umm, I guess they watched the pressure guage until it blew a hole in it. Ruffly 50 psi, so backing off 25% Sounds good to me.

Its a good thing you are talking about meterics. I did'nt do that side, and the emperial seemed pretty okay. But I could have just believed them and did'nt question it either....

Good luck! I take the test in two weeks!

 

[ScubaSarus]

Good luck on that test Mr Bubbles or Mr B . Im learning some new stuff errors or not and a whole new respect for nitrogen.

 

[ScubaSarus]

Oh and by the way I suggest this as your new Avatar as this is now the officail Mr Bubbles or Mr B as he's called in the game.

 

[Mr. Bubble]

Thats pretty cool. I'll save it to file when I get back home. Thanks

MR. B

 

[The_DivePirate]

I'm also glad I was doing the imperial version. It semed well enough that I got a 100% on the test. Well, actually my instructor, who happens too be a police sar diver told us when I took my rescue class that you were not too stop for breaths in the water. You are too get the victim to shore as quick as possible and then start the appropriate measures at that time. As far as the physics goes though, I'm no physics major, but have done a few calculations in my tec training, so it all seemed relative. Also, good luck on the test, it was a doozer. Oh, I didnt get the navy tables with my books and that is what the test reflects. I used my padi tables and they were within minutes. I showed my instructor the that I was right by padi tables and he was fine with that. It was more about the fact that you knew how too use the dive tables. Seems a little odd that an agency that pushes the computer would have a section on dive tables, considering they teach them in the open water class. Oh well. Again, good luck with the test

 

[Mr. Bubble]

"you were not too stop for breaths in the water. You are too get the victim to shore as quick as possible and then start the appropriate measures at that time"

Thats quite contrary to how I was taught in my recue class. Being a five min. or more swim from shore, we had to do the breaths every 10 seconds. That much time without breathing will cause lots of brain damage...or worse.



"Seems a little odd that an agency that pushes the computer would have a section on dive tables"

Yes it does. They state thats why they are different. But I learned that nomatter who the agency is, the regulating facility has standards that all must comply with. So SSI, SDI, PADI NAUI all have to meet the same critera. It just a mater of how they go about teaching it.

I have enjoyed learning about off gassing CO2....I never knew it was so vital to the process, especially at depth.