Re: RE: Variable Capacitance and Inductance

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Alexander Rice by way of Terry Fritz <twftesla-at-qwest-dot-net>" <alex-at-rices.myip-dot-org>

26/05/2002 19:00:12, "Tesla list" 
<tesla-at-pupman-dot-com> wrote:

>Original poster: "David Thomson by way of 
Terry Fritz <twftesla-at-qwest-dot-net>" 
<dave-at-volantis-dot-org>

Oh for heavens sake, i wish this topic 
would just die but i couldnt let this one 
pass...


>Essentially what you are saying then is 
that humidity alters the negative
>ion to positive ion ratio in a given 
environment?

what on earth!! you are going to tell us 
that it is altering the polaristion of 
your moon crystals in the room temperature  
water bubble fusion positronic drive that 
powers your coil next.

  Obviously the walls are
>not conducting in the sense of current.  
But the walls could be conducting
>in the sense that they change to a 
greater or lesser charge.

in what other sense do things conduct? the 
extra parasitic resistance could shunt the 
coil and fool the meter, ditto parasitic 
capacitance since no LCR meter actually 
measures DC inductance


  This change in
>wall charge is what would affect the 
capacitance of an object nearby?#

no, 'charge' (read electrostatic field) 
does not affect the capacitance of things 
in it - like inductance it depends on 
geometry and materials.
>
>As for the measurement of inductance 
being separate from the inductance of
>the physical coil, I take issue with this 
idea.

thats fine - what i suggest you do is you 
measure a standard resistor with your 
multimter, then take the back off oyur 
multimeter and use a compass to allign the 
multimeter with london and then the 
calibration pot pointer with mecca. now 
maesure the resistor again. Hey presto - 
without even touching it you have changed 
the value of the resistor...

 But inductance has NOT been proven to
>be a characteristic solely determined by 
the physical characteristics of the
>coil.  It has been proven that the 
effective inductance of a coil can be
>changed without changing the physical 
characteristics of a coil.  Since the
>effective inductance of a coil can be 
changed, the inductance measurement
>will also change.

effective is the important term here - 
effective implies the apparent real world 
inductance that has parasitic C and R - 
what you measure is EFFECTIVE inductance -  
you appear to have a problem separating 
understnding that the real world deviates 
from theory not because the theory is 
worng but because it is incorreclty 
applied - if you were to factor in the 
parasitic R and C the readings will match 
but this is uneccesarily complicated for 
everyday use.

  And this change reflects the working 
inductance of the
>coil.  Variations in inductance 
measurements can mean the effective (and
>thus real)

NO - effective and real are different in 
the same way that fact and fantasy, 
guesses and theory, right and wrong are 
all different

>the inductance of the coil is variable.

yes it is, if you change its shape - this 
includes the shape of the former, the 
shape of your test leads etc.

regards

alex

 
------------------------------
Alexander JJ Rice
Geek#-1232
Rank : G-2 (Wahey!)
http://www.TheGeekGroup-dot-org
"Because the Geek Shall Inherit the Earth 
!"?