dopplersprincipen
The Doppler principle, also known as the Doppler effect, is a phenomenon observed in wave propagation where the frequency of a wave appears to change for an observer moving relative to the wave source. This principle is named after Austrian physicist Christian Doppler, who described the effect in 1842. The Doppler effect is most commonly experienced with sound waves, but it applies to all types of waves, including light and radio waves.
In the context of sound waves, the Doppler effect can be heard when a sound-producing source, such
The Doppler effect is not limited to sound waves. It also applies to light waves, which is
In radar and lidar systems, the Doppler effect is used to measure the velocity of moving objects.
The Doppler principle has numerous practical applications, from improving the accuracy of weather forecasting to enhancing