Chladni figures are patterns that appear on surfaces when they are made to vibrate at certain resonances. It sounds dry, but throw in some sand and just the right frequencies and it becomes an amazing ...

Shake a metal plate covered in sand at certain frequencies and intricate patterns mysteriously appear. Jon Jacobsen, a mathematician at Harvey Mudd College, explains why this 200-year-old ...

Most speaker enclosures are made from wood, though that's not the only material being utilized by audio hardware makers – we've seen speakers made from concrete, for example, and the many portable ...

LIFT A SHELL from the sand to your ear and everyone knows you can hear the sea. But listen carefully enough and you can hear shells in the sand too. Sand, it turns out, has a signature sound of its ...