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Re: Not shooting for anything gloriuous, but... (fwd)





---------- Forwarded message ----------
Date: Thu, 15 Apr 1999 14:21:10 PDT
From: chris morgan <crmorgan-at-hotmail-dot-com>
To: tesla-at-pupman-dot-com
Subject: Re: Not shooting for anything gloriuous, but...



- If I put water in a two liter soda 
>bottle and dissolve ordinary table salt (lots of it) until it stops 
>dissolving, then wrap the outside with aluminum foil, will it worr? 
>Should I use several in series? In parrelell? Please help.

What kind of primary voltage are you looking at?
>By the way - when a capacitor is measure in farads, what exactly 
does 
>the number mean? I understand that it is coulumbs(forgive the 
>spelling) per volt, but what does that mean, practically? What is 
the 
>difference, say, between 0.002 uF and 25 uF? Any clarifying comment 
>would help. Thanks.
>
A coulomb is a unit of electric charge. 1 coulomb is equal to the 
charge on 6.25*10^18 electrons.  So a .002 microfarad capacitor could 
store .002 micro (one millionth)coulombs of charge with one volt.  
Which means you can store 12.5 *10^9 electrons for every volt 
aplied.  T 25 uF cap can hold 156*10^12 electrons for every volt.  If 
the number of electrons is directly porportinat to the voltage.  
Double the voltag, double the charge.  Basicly, the higher the 
capacitance in farads, the more electrons you can cram in there per 
volt.


Chris, via the inter-thingy 


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