Why 18.9 Hertz Makes You See Ghosts

Logosofia no Dia a Dia · Mar 19, 2026 · 25m

In this episode of My Weird Prompts, we explore the world of sound existing just below the limit of human hearing. Known as infrasound, these low-frequency waves are more than just a scientific curiosity; they are a physical force that can bypass our ears and "hack" our bodies directly. We delve into the fascinating case of Vic Tandy’s "haunted" lab, where a vibrating fan created ghostly apparitions, and examine how animals like elephants use these deep rumbles to communicate over miles of savanna. Finally, we separate fact from fiction regarding the "brown note"—the legendary frequency…