Re: [Paddlewise] Pro's and Con's of the "Swede Form"

-----Original Message-----
From: Nick Schade <schade_at_guillemot-kayaks.com>
To: PaddleWise_at_lists.intelenet.net <PaddleWise_at_lists.intelenet.net>
Date: June 3, 1999 10:25 AM
Subject: Re: [Paddlewise] Pro's and Con's of the "Swede Form"


(SNIP)

>
>I will accept no _measurable_ wave-making resistance whatsoever. Physics
>does not generally work with forces disappearing all-together, they
instead
>get to be so small that you can ignore them completely. The equation for
>wave velocity has depth as one factor. There is no theoretical limit to
>this depth having a calculatable effect on wave velocity, but there is a
>practical limit where you can say "if the depth is greater than a certain
>number of wavelengths, you can ignore it."
>

You know me, "If you can't measure a thing you don't know much about it".
:-)

Actually I didn't think that up. It comes from Lord Kelvin who said, "If
you can measure that of which you speak, and can express it by number, you
know something of your subject. But if you cannot measure it, your
knowledge is meager and unsatisfactory."


Cheers,
John Winters
Redwing Designs
Specialists in Human Powered Watercraft
http://home.ican.net/~735769/





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