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Another New Stonehenge Mystery Is Solved With A Clever Technique Revealing Invisible Details About Its PurposeFascinating secrets continue to be revealed about the 5,000-year-old stone circle at Stonehenge, including some sophisticated design elements.
The "reverberation time"—the time it takes for a sound to decay by 60 decibels—was about 0.6 seconds for mid-frequency sounds inside the model. This indicated that sounds inside Stonehenge ...
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