Ultrasound

The video explores the heightened senses of animals, particularly their hearing abilities. It conducts an experiment to determine the human hearing range, establishing it as 20 Hertz to 20 kilohertz. The video explains sound frequencies, including infrasound and ultrasound, and discusses the applications of ultrasound in fields like machinery inspection and medical imaging. It highlights the use of ultrasound by animals for navigation and communication.

What is the purpose of a dog whistle and how does it work?

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