Subject:
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Re: Darn those definitions (was: The new Super Car)
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 9 Aug 1999 07:34:59 GMT
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Viewed:
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892 times
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In lugnet.robotics, Patricia Schempp writes:
> In lugnet.robotics, Dennis Clark writes:
>
> > I think that you will find that fluid is not compressable. If fluid were
> > compressable fish could not live 2 miles down, divers couldn't dive and
> > dolphins and whales would be crushed on their very common 700 foot dives.
> >
> > This is all quite true of water, its not compressable. Is water unique in
> > that aspect?
> >
> > DLC
>
> incorrect my friend. if water was not compressable at all there would be no
> pressure difference from the top to the bottom. Admittedly it is not very • easy
> to do it, but it will compress. Most solids are compressable too. At hight
> pressures, most things will fill a smaller volume.
Like I said, everything is compressible, with the probable exception of the
stuff in a black hole. Even the exclusion principle (the law that controls
elecron 'orbits' round an atom) is reconed to be overcome by sufficient force
(gravity), and atoms then collapse! - Read "A Brief History Of Time" - loads
of interesting (but useless?) facts for us pedantic engineers.
However, water is unique (or at least very special) in many ways, for example
the fact that it is a liquid at room temperature & the fact that it's solid
phase is less dense than it's liquid phase (So ice floats). Without either of
these, life as we know it (Jim?) would not occur.
Anyway, this has nowt to do with robotics or whatever, so I'll shut up.
Kevin.
P.S. I *really* wanted to post this to off-topic - do I just change the
'Newsgroups' bit to 'lugnet.off-topic'???
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Message is in Reply To:
 | | Re: Darn those definitions (was: The new Super Car)
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| (...) incorrect my friend. if water was not compressable at all there would be no pressure difference from the top to the bottom. Admittedly it is not very easy to do it, but it will compress. Most solids are compressable too. At hight pressures, (...) (25 years ago, 8-Aug-99, to lugnet.robotics)
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