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    Re: Status of Celestial Nav in 2015
    From: Tom Sult
    Date: 2015 Mar 10, 15:44 -0500
    I'm no EE but in undergrad I did some surface EMG work and our Faraday cage was grounded. If the ground was interrupted we would get interference in the surface EMG. 

    Tom Sult, MD
    Author: JUST BE WELL

    On Mar 10, 2015, at 15:36, Don Seltzer <NoReply_Seltzer@fer3.com> wrote:

    Ideally, the surrounding Faraday cage is a perfect conductor.  Thin
    aluminum foil might have sufficient electrical resistance to be an
    effective shield.  I believe it is also better if the Faraday cage is
    externally grounded.
    Don Seltzer
    On Tue, Mar 10, 2015 at 3:41 PM, Bob Goethe  wrote:
    >>>As to Faraday cages: I did an experiment with one of our cell phones. I
    >>> wrapped it up in heavy aluminum foil, folded all the edges, and placed it in
    >>> an all metal eyeglass case. My mate then dialed the phone and behold- it
    >>> rang. I figure if a mobile phone signal can transmit through that set up an
    >>> EMP would have no trouble at all. <<
    > Try this again, but this time put an electrical-insulator layer around the
    > cellphone so that the metal can't touch it at all.  I'll do the same thing
    > sometime in the next 24 hours.
    > We can both adopt the motto of the Royal Society:  Nullius in verba (Latin
    > for "on the word of no one" or "Take nobody's word for it").
    > I'll be disturbed if this whole Faraday cage thing doesn't work.
    > Bob
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