<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12pt"><div><span>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.<br></span></div><div> </div><div>Al Secor</div><div><br></div> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12pt;"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight:bold;">From:</span></b> hank pronk via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> Personal Submersibles General Discussion
<personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Friday, August 8, 2014 9:05 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Gamma test dive<br> </font> </div> <div class="y_msg_container"><br><br clear="none">OOPPS I meant 100 feet lol<br clear="none">Hank--------------------------------------------<br clear="none">On Fri, 8/8/14, Vance Bradley via Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"> Subject: Re: [PSUBS-MAILIST] Gamma test dive<br clear="none"> To: "Personal Submersibles General Discussion" <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> Received: Friday, August
8, 2014, 8:55 PM<br clear="none"> <br clear="none"> The pressure inside drops<br clear="none"> by 500 feet? What pressure?<br clear="none"> Vance<br clear="none"> <br clear="none"> Sent from my iPhone<br clear="none"> <br clear="none"> > On Aug 8, 2014, at 8:45 PM, hank pronk via<br clear="none"> Personal_Submersibles <<a shape="rect" ymailto="mailto:personal_submersibles@psubs.org" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"> wrote:<br clear="none"> > <br clear="none"> > Today I<br clear="none"> dove Gamma to 95 feet in Kimbasket Lake (bush Harbour) the<br clear="none"> visibility was awful.<br clear="none"> > Maybe 2 feet at<br clear="none"> best. Big mystery though, when I dive to 95 feet, in a<br clear="none"> matter of 5 min the pressure inside drops by 500 feet. The<br clear="none"> pressure stays right on perfect until I go deeper. My<br clear="none">
theory, the water is glacier fed, very cold at depth causing<br clear="none"> the temp inside the sub to drop, creating negative<br clear="none"> pressure. Could that be it? Vance, did that happen in<br clear="none"> the north sea? <br clear="none"> > On a positive note, I<br clear="none"> can stop in the water Colum at any depth and hover. I can<br clear="none"> surface and stop at ten feet and hover.<br clear="none"> ><br clear="none"> Hank <br clear="none"> ><br clear="none"> _______________________________________________<br clear="none"> > Personal_Submersibles mailing list<br clear="none"> > <a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"> > <a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles"
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