Question

What is the Doppler effect? Mention one of its applications ​

Answer 1

Doppler's effect can be defined as an observed change in frequency of a wave when an observer and source have a relative motion between them. In other words, it is an increase or decrease in the frequency of waves (for example - sound or light) as the source and observer move toward or away from each other.

This phenomenon was named after the Austrian physist, Christian Doppler, who proposed it in 1842 during his time at Prague Polytechnic University.

Answer 2

Answer:

doppler effect is attention to the fact that the colour of luminous body changes by relative motion of the body and the observer is known as doppler effect

Explanation:

applications

speed and direction of motion of substance can be calxulated