Wednesday, April 4, 2012

Earth's quietest place: The 'anechoic chamber' at Orfield Laboratories, which is 99.99 per cent sound absorbent

Earth's quietest place: The 'anechoic chamber' at Orfield Laboratories, which is 99.99 per cent sound absorbent
This room achieves its ultra-quietness by use of 3.3-foot-thick fiberglass acoustic wedges, double walls of insulated steel and foot-thick concrete.  After 30 minutes you slowly start to hallucinate...

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