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Stonehenge’s acoustic properties revealed

Researchers have performed a series of acoustic experiments on a full-sized replica of Stonehenge. The number of missing bits at the famous stone circle by the A303 in Wiltshire was an obvious problem, and tests there by the team produced only a limited number of weak echoes and no noticeable reverberation.

Were Mayan pyramids echo machines?

An acoustics expert is making the claim that Mayan pyramids were built to be echo machines, used to inspire spiritual feelings. In 1998, Lubman published a Journal of the Acoustical Society of America study suggesting that when someone claps in front of the " El Castillo" pyramid at the famous