Re: [Phys-L] physics in the real world : WAN in a cage
For faraday cage demos, I have had good luck with a metal mesh cooking strainer
~12in diameter dome and a larger flat metal mesh bacon grease splatter guard.
The mesh is about 1mm square. Inexpensive and easy to store.
A cell phone sandwiched inside the dome and the flat mesh (no gaps) quickly
loses all bars. And, it’s visible to the students. Dramatic when they try to
text the isolated phone.
I also use it show that a ball of Mylar tinsel inside the mesh will not puff
out when placed near or zapped by a van de graff generator.
Scott
> On Oct 4, 2023, at 5:03 PM, bernard cleyet via Phys-l
> <phys-l@mail.phys-l.org> wrote:
>
>
>
>> On Oct 4, 2023, at 11:52, Brian Whatcott <betwys1@sbcglobal.net> wrote:
>>
>> This supports John's finding that a two inch wire spacing cage would
>> provide considerable attenuation.I like Bernard's method of checking
>> attenuation practically, though it took a little searching to find that
>> covering a metal trash can with an M2 implies a metal skin laptop like the
>> Macintosh.
>> __
>
>
> Bad bc: the printer is a geo’s. hammer. And he did write air. Of which he
> has two, an M1 and an M2.
>
> bc …. thinks BW is smart.
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