Historical Acoustics (Acoustics, Ultrasound and Vibration)

Historical Acoustics Sites:

Acoustical Detection of Aircrafts Acoustical Detection of Aircrafts: From the first world war until the 30's air acoustics played an important role in the air defence. As radar was still to be discovered, vision had to be supplemented by hearing using the sound of the engines. (MUSEUM "WAALSDORP": TNO-FEL Museum) (Historical Acoustics) http://www.tno.nl/instit/fel/museum/en/airacous.html Rock Art Acoustics Rock Art Acoustics: Steven. J. Waller's Home Page (Historical Acoustics) http://www.geocities.com/CapeCanaveral/9461/ Moving Beyond Prophecies & Predictions Moving Beyond Prophecies & Predictions: By Cynthia Gage (Atlantisrising) (Historical Acoustics) http://atlantisrising.com/issue9/ar9beyond.html Stone Structures and Sound Stone Structures and Sound: (Historical Acoustics) http://easyweb.easynet.co.uk/~m.judge/stones.htm Chirped Echo from the Mayan Pyramid of Kukulkan at Chichen Itza Chirped Echo from the Mayan Pyramid of Kukulkan at Chichen Itza: David Lubman of the Acoustical Society of America argues that the echo sounds like the primary call of the Mayan sacred bird, the Quetzal. (Historical Acoustics) http://www.ocasa.org/MayanPyramid.htm