On Wed, 17 May 2006 11:30:55 -0400, "Yuri Blanarovich"
wrote:

Electrostatic shields work on principle of capacitance plate, being grounded
and side exposed to electrical/electrostatic fields

There's a very simple test of this "shield." It relates to experience
and doesn't need for you to go to the library.

1.) Tack a wire across the gap.

Q. Do you still have signal?

A. No!? None????

Extra Credit Question:
Did the wire make the "shield" better, or worse?

73's
Richard Clark, KB7QHC

p.s.
from your experience, the answer to the initial question above may
vary. If in fact it does, it may bring new material for discussion.