Ultrasound Waves: Vibrations Beyond Human Hearing

Ultrasound refers to sound waves with frequencies above 20,000 hertz, beyond what humans can hear.
Many animals, like bats and dolphins, use ultrasound for echolocation to navigate and hunt.
Medical imaging relies on ultrasound to create pictures of organs, tissues, and even unborn babies.
Ultrasound waves reflect off internal structures, and computers turn those echoes into images.
These waves are safe at medical levels because they don’t use harmful radiation.
Industrial uses of ultrasound include cleaning delicate objects and detecting cracks in materials.
Some pest repellents emit ultrasound tones that are annoying to rodents but inaudible to people.
Ultrasound therapy can stimulate healing by gently warming tissues deep inside the body.
Because of their high frequency, ultrasound waves can be tightly focused for precision work.
From womb scans to whale calls, ultrasound opens a hidden world of vibrations beyond our ears.