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Subject: 
Re: Darn Those Definitions
Newsgroups: 
lugnet.robotics
Date: 
Fri, 6 Aug 1999 17:55:38 GMT
Original-From: 
Jonathan Woodward <woodward@*StopSpam*guesswork.com>
Viewed: 
1078 times
  
At 10:21 AM 8/6/99 -0600, John A. deVries II wrote:
At 08:25 AM 08/06/1999 , you wrote:
Actually, it involves a fluid, not a liquid.  Might seem like semantics, • but
by the scientific definition gases are fluids.
Wrong-o.  Sorry to be flameish about this, but generally speaking
(approximately) four states of matter are accepted: solid, liquid, gas • and
plasma.  Liquids and gases have fairly distinct differences having to do
with the degree of inter-particle forces.

    -Obviously.  However, in my dictionary (Columbia), "fluid" includes
both gases and liquids, and "hydraulic" says "moved or operated by a
fluid".  Now, I completely agree that "hydraulic" _ought_ to mean "moved
or operated by a liquid", but that isn't what my dictionary says.  Yours
may differ.

A couple of definitions:
pneu·mat·ic
Pronunciation: nu-'ma-tik, nyu-
Function: adjective
Etymology: Latin pneumaticus, from Greek pneumatikos, from pneumat-, • pneuma
air, breath, spirit, from pnein to breathe
hy·drau·lic
Pronunciation: hI-'dro-lik
Function: adjective
Etymology: Latin hydraulicus, from Greek hydraulikos, from hydraulis
hydraulic organ, from hydr- + aulos reed instrument

    -Those aren't definitions, those are etymologies.  If I told you that
"monitor" came from the Latin for "to warn", that wouldn't tell you much
about the object you're looking at right now.

    -JW


Jonathan Woodward  woodward@guesswork.com  http://www.io.com/~woodward/
"If you have any trouble sounding condescending,
    find a Unix user to show you how it's done." -Scott Adams
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics



Message has 1 Reply:
  Re: Darn Those Definitions
 
(...) Merriam-Webster and OED both say that the word pertains to "water or other liquid". (25 years ago, 6-Aug-99, to lugnet.robotics)

Message is in Reply To:
  Re: The new Super Car
 
But that is false advertisement in a few senses. Hydrolics involve a liquid, correct me if I'm wrong but that is where the HYDRO comes from. Also, in the pics, they show sparkles in the hydrolics, giving a false impression. This is just like the (...) (25 years ago, 6-Aug-99, to lugnet.robotics)

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