Subject:
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RE: Darn those definitions (was: The new Super Car) and ????
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 8 Aug 1999 04:54:35 GMT
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Original-From:
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Héctor Segura Klepatzky <hsegurak@lared.net.pe*StopSpam*>
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Viewed:
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1182 times
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Patricia:
Compressed solids have same weight and mass, only smaller dimensions
(relative to its dimensions WITHOUT the compression forces). If you compress
a lot but very a lot a gas it is transformed in LIQUID. The pressure of
water (or Hg for that matter[SOLID]) is measured in the height of a column
of
water, more height in the column of water more the pressure, but compression
???
When you apply a force against a solid (push) there is a internal fenomen:
the compression.
When you apply a force the other way (pull) there is a internal fenomen: the
traction.
In the pneumatic systems (normally air), the gas is compressed ( 100's
p.s.i.) and the idea is to make rapid ( in the order of milliseconds)
movements in a piston (ie. the pneumatic hammer, a wrench to screw). The
air, remember, is a mix of different gases AND water ( the relative
humidity) so the problem in practice is complex.
Hector Segura K
hsegurak@lared.ne.pe
-----Mensaje original-----
De: Patricia Schempp <pschemp@clemson.edu>
Para: lego-robotics@crynwr.com <lego-robotics@crynwr.com>
Fecha: Sábado 7 de Agosto de 1999 07:58 PM
Asunto: Re: Darn those definitions (was: The new Super Car)
> 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.
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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