Echoes
Echoes are usually used to measure distances for example a "Bat" creates a high velocity sound wave that hits its pray "The Moth" and it comes back with an echo of where abouts it is.
Also something called an "Cardioechogram" also, known as a "Cardiogram" is used to measure the heart bps.
So Echoes Are An Useful Measuring Device.Sonar uses echoes to locate objects by bouncing sound waves off them and detecting the echoes.
Sonar
radar
sonar
radar
sonar
The bat uses their echoes of their cries to know where the prey is.
Ultrasound imaging uses the echoes of sound waves to create images of deep structures in the body. High-frequency sound waves are transmitted into the body and the echoes that bounce back are used to create real-time images of internal organs and tissues.
radar
The speed of sound is the distance travelled by the sound waves in the time between the original sound and the echo. For a direct echo, the distance travelled is double the distance to the reflecting surface.
Ultrasound imaging uses the echoes of sound waves to create images of deep structures in the body. Sound waves are sent into the body, bounce off tissues, and are then detected to create real-time images of organs, muscles, and other structures.
The Echoes was created in 1959.