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London's Newest Library Has a Copper Lined Room That Blocks Messages and Emails · HackerTrans

London's Newest Library Has a Copper Lined Room That Blocks Messages and Emails(londonist.com)

2 points·by aries1980·قبل 5 سنوات·1 comments

London's Newest Library Has a Copper Lined Room That Blocks Messages and Emails

https://londonist.com/london/books-and-poetry/southwark-heritage-centre-walworth-library

1 comments

simonblack·قبل 5 سنوات

"Copper Lined Room" = run-of-the-mill Faraday cage.

https://en.wikipedia.org/wiki/Faraday_cage