Chichen Itza acoustic engineering genius: ball court and 7 echoes

The Mayans cherished the number 7, and when they built the great ball court at Chichen Itza, they designed it to echo exactly 7 times - widthwise. If you stand near the top or bottom of the court - lengthwise - you'll hear that it only echoes once.

Видео Chichen Itza acoustic engineering genius: ball court and 7 echoes канала Jen Lampton