In the first hearing test of live baleen whales, the animals detected much higher frequency sounds than expected, forcing ...

While other animals like whales, dogs and bats use ultrasound, it's the first recorded case of "defensive ultrasound" being used in frogs. Sound is ... screaming with a high-frequency audio ...

For homeowners worried about snakes invading their property, ultrasonic snake repellents seem like an easy and harmless ...

Ultrasound is produced by high frequency vibrations beyond the range of human hearing. The frequency of ultrasound is therefore greater than 20,000 hertz. Ultrasound, like audible sounds, is ...

Ultrasonic Testing (UT) is a non-destructive testing technique that uses high-frequency sound waves to detect defects within ...