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  • The squeaky clapping circle at Ursinus College
    A brick paver maze labyrinth 14.3 meters in diameter was constructed at Ursinus College in 2006. One follows a winding path from the circle's opening to the center of the circle. Clapping ones hands in the center of the circle produces a squeaking noise similar to the sound of scuffing a sneaker on a basketball court.
  • Diagram of the sound waves when you clap at the mound.
    Ever heard a set of stairs squeak? No doubt you will have walked up a set of wooden stairs that creak, or even seen a small rodent audibly foraging amongst some steps. But neither of these explain the reasons behind the squeaking stone steps of the New College Mound.
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