Received: by alpheratz.cpm.aca.mmu.ac.uk id DAA18500 (8.6.9/5.3[ref email@example.com] for cpm.aca.mmu.ac.uk from firstname.lastname@example.org); Wed, 6 Feb 2002 03:38:56 GMT Message-ID: <016601c1aec7$029c30c0$5e2ffea9@oemcomputer> From: "Philip Jonkers" <email@example.com> To: <firstname.lastname@example.org> References: <200201310044.g0V0i0a02373@mail12.bigmailbox.com> Subject: Re: necessity of mental memes Date: Tue, 5 Feb 2002 19:30:27 -0900 Organization: Prodigy Internet Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-Mimeole: Produced By Microsoft MimeOLE V5.00.2615.200 Sender: email@example.com Precedence: bulk Reply-To: firstname.lastname@example.org
----- Original Message -----
From: Joe Dees <email@example.com>
Sent: Wednesday, January 30, 2002 3:44 PM
Subject: Re: necessity of mental memes
> >Date: Wed, 30 Jan 2002 10:51:16 -0500
> > firstname.lastname@example.org Joachim Maier <email@example.com> Re: necessity
of mental memesReply-To: firstname.lastname@example.org
> >>All velocity involves change, but not all change has to be a velocity
> >>change; IOW, not all change is positional.
> >I have to admit, the volume of messages was sometimes too high for me,
> >I did not read all the messages. But could anybody please give me an
> >example of change were no spacial change is involved?
> >I still have a hard time to come up with any example where nowhere in the
> >process of any change there is not also a change in velocity of something
> What about isotopic decay or the stopping of a spinning sphere? Of
course, in the first instance, some electrons leave the quantum shield at a
velocity while the rest remains unchanged, and in the second the circular
motion is stopped but the sphere as a whole maintains its position. Change
does involve the movement of SOME of what changes, but not ALL.
What about recoil Joe? Surely conservation of momentum requires occurrence
of a recoil manoeuvre of the system minus the jettisoned electron. In case
spinning sphere, it dissipates its rotational energy to the environment by
friction. So, spatial change occurs also to the particles comprising the
keep changing until the sphere grinds to a stand-still.
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