Parmenides. "The pre-Socratic philosopher sparked an intellectual revolution that still echoes today. Yet for philosophy and science to continue to progress in the 21st century, we may need to embark on an entirely new cognitive journey ."
posted by homunculus on Dec 27, 2007 - 21 comments

An ancient theatre filters out low-frequency background noise. The ancient Greek theatre of the Asklepieion of Epidaurus, built mostly during the 4th century B.C. and now a World Heritage Site, is renowned for its extraordinary acoustics. Researchers have figured out that the arrangement of the stepped rows of seats are perfectly shaped to act as an acoustic filter, suppressing low-frequency background noise while passing on the high frequencies of performers' voices. [Via MoFi.]
posted by homunculus on Mar 28, 2007 - 16 comments