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Re: [APD] Caution with lead weights -- Or - Ethyl's Nails



I think he's referring to area by depth or the volume -- with a wire, the diameter gives crossection and you can measure ohms per length for that cross section. but with a length of flat material, you need to take into account the width and thickness.

sh
 
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----- Original Message ----
From: Jerry Baker <jerry at bakerweb_biz>
To: aquatic plants digest <aquatic-plants at actwin_com>
Sent: Wednesday, September 27, 2006 8:53:47 PM
Subject: Re: [APD] Caution with lead weights -- Or - Ethyl's Nails


Vaughn Hopkins wrote:
> You need to know more than the length, the cross section is needed too.  
> It's really micro mhos per centimeter per square centimeter.

I've never seen conductivity measurements that refer to area.

-- 
Jerry Baker
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