[TCML] Smoke Detector Issues / Faraday cage
nickobert.testein at gmail.com
Tue Jan 31 09:17:19 MST 2012
take a sheet of aluminum foil and wrap phone. call. dead. now take a
knif and cut a small hole, call again. dead, now increase cut size and
call again. repeat until the phone rings. open phone- voila, the
antenna will be smaller than the cut in the foil.
the enterior of a microwave oven in the off-mode is a wave guide, not
a faraday cage.
On Tue, Jan 31, 2012 at 6:21 AM, Jim Lux <jimlux at earthlink.net> wrote:
> On 1/30/12 7:39 PM, Peter Terren wrote:
>> Agreed. I've tried the phone in the microwave before (works).
>> A Faraday cage with coarse mesh won't stop RF but that is not a high
>> intensity signal and is broadband. It will give RF interference but not
>> kill anything.
>> What the cage does is stop is capacitative pick up on adjacent objects
>> like you and other electronic equipment. Also sparks to mains wiring -
>> nasty. It also solves the problem of an RF earth.
> Exactly. It's a "Faraday cage" (in some sense), but not a "shielding cage"
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