If voltage is like pressure, what's the psi/volt value?

Fred Bloggs <nospam@nospam.com> wrote in message news:<405C602B.4090405@nospam.com>...
William J. Beaty wrote:
If voltage is like pressure, what pressure is it?


Interesting question- especially the way you implicitly equate "like" to
"is"- the "like" means the two entities assume the same analytical role
Click to expand...
Good catch. I really should have said:

If voltage is like pressure, what "pressure" is it?

Or perhaps:

If voltage is like pressure, what pressure "is" it?


((((((((((((((((((((((( ( ( (o) ) ) )))))))))))))))))))))))
William J. Beaty Research Engineer
beaty@chem.washington.edu UW Chem Dept, Bagley Hall RM74
billb@eskimo.com Box 351700, Seattle, WA 98195-1700
ph206-543-6195 http//staff.washington.edu/wbeaty/
 
Fred Bloggs <nospam@nospam.com> wrote in message news:<405C602B.4090405@nospam.com>...
William J. Beaty wrote:
If voltage is like pressure, what pressure is it?


Interesting question- especially the way you implicitly equate "like" to
"is"- the "like" means the two entities assume the same analytical role
in the elementary linearized mathematical models of the corresponding
circuit operation- so where do you get "is" from that. For example,
one's analytical abilities decay with age as in ("like") Newton's first
cooling law, with suitably adjusted origin, so what R-value "is" your brain?
Click to expand...

A little implication
can shed a lot of light
But a lot of explicitation
Is shed-load of shite

Cheers
Robin
 
If you have 1 volt you have a pressure of 1 volt

Regards MC


<robin.pain@tesco.net> wrote in message news:bd24a397.0403240130.21b7e7a7@posting.google.com...
Fred Bloggs <nospam@nospam.com> wrote in message news:<405C602B.4090405@nospam.com>...
William J. Beaty wrote:
If voltage is like pressure, what pressure is it?


Interesting question- especially the way you implicitly equate "like" to
"is"- the "like" means the two entities assume the same analytical role
in the elementary linearized mathematical models of the corresponding
circuit operation- so where do you get "is" from that. For example,
one's analytical abilities decay with age as in ("like") Newton's first
cooling law, with suitably adjusted origin, so what R-value "is" your brain?


A little implication
can shed a lot of light
But a lot of explicitation
Is shed-load of shite

Cheers
Robin
Click to expand...
 
Mark wrote:
If you have 1 volt you have a pressure of 1 volt
Click to expand...
Anyone remember the elementary dimensions of volts from
dimensional analysis? I once proved Ohm's law using
the elementary dimensions of volts, amps, and ohms.
--
73, Cecil http://www.qsl.net/w5dxp



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In article <406376b3$1_7@corp.newsgroups.com>,
Cecil.A.Moore@ieee.ONEDOT.org says...
Mark wrote:
If you have 1 volt you have a pressure of 1 volt

Anyone remember the elementary dimensions of volts from
dimensional analysis?
Click to expand...
Sure, this stuff is available for a quick web search:

From: http://physics.nist.gov/cuu/Units/units.html

Amperes are a primary SI unit: electric current == A

I once proved Ohm's law using
the elementary dimensions of volts, amps, and ohms.
Click to expand...
"Proved" is a rather strong word, since they are interrelated
units, but...

A volt is defined as:

electric potential difference,
electromotive force volt thus V == W/A <= m2ˇkgˇs-3ˇA-1

An ohm is defined as:

electric resistance ohm thus R == V/A <= m2ˇkgˇs-3ˇA-2

So even with the circular definitions (back down to the
elementary "dimensions", if you must)...


V W/A m2ˇkgˇs-3ˇA-1 1
--- == ----- <= --------------- = --- = A
R V/A m2ˇkgˇs-3ˇA-2 A^-1


....or *surprise*: V=AR and W=AV

Consistent, sure. Proof? hardly. There is nothing to prove,
since they're definitions.

--
Keith
 
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