[PSUBS-MAILIST] Gamma test dive

[Al Secor via Personal_Submersibles]

It's due to the ideal gas law...PV=nrT...volume is constant (for the most part), so pressure is proportional to temperature...as the temp goes down, the pressure goes down.

 
Al Secor


________________________________
 From: hank pronk via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Friday, August 8, 2014 9:05 PM
Subject: Re: [PSUBS-MAILIST] Gamma test dive
 


OOPPS  I meant 100 feet lol
Hank--------------------------------------------
On Fri, 8/8/14, Vance Bradley via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Subject: Re: [PSUBS-MAILIST] Gamma test dive
To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
Received: Friday, August 8, 2014, 8:55 PM

The pressure inside drops
by 500 feet? What pressure?
Vance

Sent from my iPhone

> On Aug 8, 2014, at 8:45 PM, hank pronk via
Personal_Submersibles <personal_submersibles at psubs.org>
wrote:
> 
> Today I
dove Gamma to 95 feet in Kimbasket Lake (bush Harbour)  the
visibility was awful.
> Maybe 2 feet at
best.  Big mystery though, when I dive to 95 feet, in a
matter of 5 min the pressure inside drops by 500 feet.  The
pressure stays right on perfect until I go deeper.  My
theory, the water is glacier fed, very cold at depth causing
the temp inside the sub to drop, creating negative
pressure.  Could that be it?  Vance, did that happen in
the north sea?  
> On a positive note, I
can stop in the water Colum at any depth and hover.  I can
surface and stop at ten feet and hover.
>
Hank 
>
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