TIL it's possible to hallucinate with only a ping pong ball, a red light, and a radio. : r/todayilearned
Hearing the sound of table tennis help you sleep better - PingSunday
Sharper Image® Virtual Space Ping Pong Game Set with Infrared Technology, Projected Light Beam Ball, IR Emitter Rackets, Integrated Sound Effects, Solo/Two Player Action, Great Gift For Children - Walmart.com
Surprising things that have broken the speed of sound – EEJournal
GitHub - eepsmedia/ping-pong-bounce: Data and tools to study the sound of a ping-pong ball bouncing