What is the reflection coefficient KM from the interface of two media, and under what formula it is calculated? How ultrasound reflection phenomenon is used in echolocation? At what distance from the source of ultrasound is the boundary between two media, from which the reflected signal is registered after sending a pulse. The speed of propagation of the signal to 1500 m / s. Draw sending impulse and the reflected pulse is observed in this case, on the sonar screen. Why are they different "height" on the screen? Can we say that the ratio of the intensity of the emitted and received ultrasound signal is reflection coefficient KM from the above interface? How to change the "distance" between the sending pulse and the reflected pulse on the sonar screen, if the interface is 3 times closer to the source than the original?

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