Re: [PSUBS-MAILIST] Alternative hull material.

[emm03@uow.edu.au]

I know that I have to pop my ears when I dive to 2.5m. I 
would say that it might be trivial, but not negligable for 
our poor soft and gooey body tissues. especially if that 
pressure comes on suddenly...
I also am pretty sure that you could get a nasty case of 
lung squeeze at that depth.
For what its worth..
EM.



---- Original message ----
>Date: Mon, 17 Mar 2003 23:06:46 1100 (UTC)
>From: peter  mckellar <mckellar@earthlink.net>  
>Subject: Re: [PSUBS-MAILIST] Alternative hull material.  
>To: personal_submersibles@psubs.org
>
>Hi Ward,
>
>>Please correct me if I'm wrong, but isn't 33 feet 1 
atmosphere?  The
>pressure at 8 feet is almost trivial. 
>
>0'  = 1 ATM
>1 ATM = 14.7 psi
>33' = 2 ATM (2 ATM is actually 32.8')
>8'  = 2.5m
>    = 1.25 ATM
>    = 18.4 psi (true, pretty trivial)
>
>i've rounded a little in the sums :)
>
>14.7 psi seems higher than my faded pre-metric memories 
suggest.  can anyone confirm this is correct?
>
>the conversions were done by:
>
>  http://www.megaconverter.com/Mega2/
>
>
>hope this helps
>peter
>