Researchers captured sound fields around musical triangles. They wanted to understand the physical properties of the triangle instrument, test assumptions about the contribution of the triangle shape, ...

Mathematicians’ Favorite Shapes Hold the Key to Big Mathematical Mysteries ...

The mysterious Antikythera Mechanism is 2,000 years old and has long puzzled scientists. New research into its triangle-shaped teeth may finally reveal its intended purpose.

The triangle is a small instrument made of a metal rod bent into a triangle shape that is open at one corner. While small, its sound is distinct, with multiple overtones and nonharmonic resonance.

For the triangle, researchers captured proof that resonance occurs even with the notched, open corner, and it may occur in other instrument shapes as well.