We have read that most humans can hear sounds between 20 and 20,000 hertz. Ultrasounds are those above this limit or specifically, above 20,000 hertz. They are not different from the normal sound in terms of physical properties. But the only difference is that they can be heard and produced by only a few animals like bats, moths, dolphins etc. and not by humans. In other words, the range of ultrasound begins where our sonic range ends.
The uses of ultrasound can be seen in electronic, navigational, industrial, medicinal and security applications. Let’s look at a few examples in brief.
In some cases, ultrasound is used to detect objects or to measure distances. They are also helpful in testing products and structures.
In addition to these, ultrasound is used in the field of medicine to view the internal organs of our body.