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.

Researchers use a cornstarch-like fluid to selectively damp harsh vibrations, flatten frequency response, and bring clearer ...

Dr Rakesh Verma rakeshforests@gmail.com Temple bells were built to shift consciousness, every bell releases a frequency.

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 ...