Long-term exposure to low-frequency noise can cause numerous health problems, but the solution may be found in an unexpected object, a pingpong ball. Conventionally thought of as the hollow plastic ...

Even at eight years old, the boy had been playing soccer long enough to know something was off. When he tried to track the ball, the object blurred and disappeared while the rest of the field remained ...

Researchers describe an acoustic meta-surface that uses pingpong balls, with small holes punctured in each, as Helmholtz resonators to create inexpensive but effective low-frequency sound insulation.