Though it may look like a great place to hold a party, this anti-RF chamber is strictly used for testing radio equipment. First picture in gallery.

The Benefield Anechoic Facility is a gigantastic 250 x 264 x 70-foot steel plate box inside a metal hangar building. Inside, 816,000 pyramidal foams absorb any RF signal so they don’t bounce off the walls and the testing equipment gets a clear signal

[via Gizmodo]

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