An “anechoic chamber” at Microsoft’s headquarters in Redmond, Washington, has been certified as the quietest place on Earth. The experience inside is bizarre.

The elaborate sets—including the reverberation chamber—have to be transportable throughout the tour. (Santiago Felipe/Courtesy Björk and Arup) ...

Letter Published: 03 December 1927 Sound Absorption Coefficients measured by Reverberation and Stationary-wave Methods E. T. PARIS Nature 120, 806 (1927) Cite this article ...