[Shop-talk] Handheld A/C voltage sensor curiosities

[David Scheidt]

On Tue, Aug 17, 2010 at 12:54 PM, Jimmie Mayfield
<mayfield+shoptalk at sackheads.org> wrote:
> On Tue, Aug 17, 2010 at 12:32:38PM -0400, David Scheidt wrote:
>> On Tue, Aug 17, 2010 at 9:52 AM, Jimmie Mayfield
>> do you have metal lath walls? B They can do strange things with electro
>> magnetic fields, even if they're not directly attached to a source.
>> They royally screw up radio performance, for instance.
>
> Would metal lath walls essentially form a Faraday cage?
>

A poor one, as there are enough big holes (doors windows, etc) to let
lots of RF in, but that's the idea.  Farrady cages work by having a
current induced in them, that cancels out the field change.

>


--
David Scheidt
dmscheidt at gmail.com