www.scientificamerican.com
7 months agoScience
Ping-Pong Ball Insulators Can Block Noise
Constant city noise can lead to long-term health problems, but a new study shows that strategically pin-pricked ping-pong balls can act as a sound insulator.
By drilling holes in the ping-pong balls, researchers created resonant cavities that filter out specific frequency bands of noise, dampening the overall sound. [ more ]