Beyond Human Hearing

The video explores the range of sounds humans can hear, from 20 to 20,000 Hertz, and discusses sounds outside this range, such as ultrasonic and infrasonic frequencies. Ultrasonic frequencies, which are above human hearing, are used by animals for navigation and by humans in medical imaging and treatments. Infrasound, below human hearing, is detectable by some animals and can affect humans, causing symptoms like disorientation. The video concludes by noting that not hearing all vibrations is beneficial, as it prevents a noisy and disorienting environment.

What new insight or understanding did you gain from this video?