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Chirped Echo from the Mayan Pyramid of Kukulkan at Chichen Itza - http://www.ocasa.org/MayanPyramid.htm
David Lubman of the Acoustical Society of America argues that the echo sounds like the primary call of the Mayan sacred bird, the Quetzal. |
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Moving Beyond Prophecies & Predictions - http://www.atlantisrising.com/backissues/issue9/ar9beyond.html
Book by Cynthia Gage. (Atlantis Rising) |
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The Sound of a Voice - http://members.lycos.co.uk/MikePenney/
Mike Penney’s page devoted to Victorian sound recording and telephony. |
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John William Strutt (Lord Rayleigh) - http://www-history.mcs.st-andrews.ac.uk/history/Biographies/Rayleigh.html
Biography of Lord Rayleigh, 1842-1919, with information on his scientific research on a range of topics including travelling waves where his theory has now developed into the theory of solitons. |