From owner-biophys@hgmp.mrc.ac.uk Wed Jul 25 20:38:18 2001 Return-Path: Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id 308E317CFA for ; Wed, 25 Jul 2001 20:38:16 +0100 (BST) Received: from localhost (localhost [127.0.0.1]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id 625CF17CF1 for ; Wed, 25 Jul 2001 20:38:11 +0100 (BST) Received: from niobium.hgmp.mrc.ac.uk (niobium [193.62.192.41]) by mercury.hgmp.mrc.ac.uk (Postfix) with ESMTP id 279F817CF3 for ; Wed, 25 Jul 2001 20:37:57 +0100 (BST) Received: (from news@localhost) by niobium.hgmp.mrc.ac.uk (8.9.3+Sun/8.8.8) id UAA00894 for biophys-list@hgmp.mrc.ac.uk; Wed, 25 Jul 2001 20:33:52 +0100 (BST) X-Authentication-Warning: niobium.hgmp.mrc.ac.uk: news set sender to using -f From: !Jones X-Newsgroups: alt.sports.soccer.manchester.united.scum-haters,bionet.biophysics,alt.war.vietnam Subject: Re: Dear !Jones Date: Wed, 25 Jul 2001 14:33:12 -0500 Lines: 50 Message-ID: <4b7ultcu8k08r8sqhgnff2cooqv3vhqmes@4ax.com> References: <2ketltcf5122bamsg1q7inkf4fkdaqadhk@4ax.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Newsreader: Forte Agent 1.8/32.548 To: biophys@hgmp.mrc.ac.uk Sender: owner-biophys@hgmp.mrc.ac.uk Precedence: bulk On Wed, 25 Jul 2001 13:45:57 -0500, Bowers wrote: >On Wed, 25 Jul 2001 12:52:52 -0500, !Jones >wrote: > >>On Wed, 25 Jul 2001 07:28:47 -0500, Stefan Walker >> wrote: >> >>>Dear !Jones; >>> >>>In biology class, we learned that male semen is really millions of >>>tiny skummies swimming furiously upstream to find the egg (you >>know... >>>the old "birds and the bees" thing). Anyway, my question is: when I >>>jerk off, how come it just sits there in a puddle? How come it >>>doesn't swim away? >>> >>>Curious >> >>Dear Curious; >> >>You have to view a puddle of cum as a physical "system" and analyze >>it's behavior from that paradigm. You see, all of those little >>skummies are swimming in random directions and, thus, tend to cancel >>each other out. The puddle of semen cannot possibly move unless they >>can be trained to act in unison. >> >>Jones > >The point you're both missing is the locus of the sperm's motion. >It's analogous to suggesting that, if all of the fish in a lake would >suddenly swim in the same direction, the lake would move; it would >not. An individual sperm cell in the puddle of semen exerts a force >opposite and equal to its forward acceleration... thus each sperm >cancels its own motion with respect to the greater system; i.e. the >puddle of cum. > >D. Bowers, Ph.D. Thanks for the insight, Dr. D. The fact is that each individual sperm cell exerts a force on the *surface* of the supporting strata of the puddle of cum. Consider the Sheriden Tank... now, clearly this is a much more sophisticated system than a puddle of semen; however, its locomotion could be viewed as quite similar, could it not? Mr. Clarke? Can you shed any light on this argument? Jones .