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London's Newest Library Has a Copper Lined Room That Blocks Messages and Emails
(
londonist.com
)
2 points
by
aries1980
on Aug 15, 2021
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1 comment
simonblack
on Aug 16, 2021
[–]
"Copper Lined Room" = run-of-the-mill Faraday cage.
https://en.wikipedia.org/wiki/Faraday_cage
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Search:
https://en.wikipedia.org/wiki/Faraday_cage