Re: [Phys-l] Strobe makes aluminum can go "ting"

[Bernard Cleyet <bernardcleyet@redshift.com>]

I suspect EMP at microwave and lower freq. would not be deterred by the 
six sheets of foolscap or the manila folder;  of course, if they are 
black one will hear a sound; a dull thud instead of a bright ping.  
Since the paper deters the sound one may conclude it's not EMP at the 
usual freq.  Dennis I think posted first.

bc, did some a few years ago and just now did more.



John Denker wrote:

> On 04/21/2007 08:09 PM, Tony wrote:
>
>  
>
> > At first we thought it was an and emp from the capacitor in the strobe's
> > firing circuit. (But, I don't have a faraday cage handy to test this at the
> > moment.) But now that I've done the experiments, above, I'm not so sure it
> > is an emp. 
> >
> > Any ideas or thoughts?
> >    
>
> I'm betting on EMP inducing eddy currents in the can.
>
> You don't need a Faraday cage;  a layer of hardware cloth
> between the strobe and the can should tell you a lot.
>  -- Light goes through the holes in the hardware cloth.
>  -- Most of the EMP does not, if my guess is right.
>
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