Question

Mention three applications of Doppler's effect.

Answer 1

Use in radar:

There is some radar that uses the Doppler effect, to calculate the velocity of target objects. A radar beam is shot at a target in motion for example a vehicle. The police use the radar to detect vehicle that are on high speed, shooting this moving vehicle with the radar beam helps to accurately calculate the velocity of the vehicle and indicated how fast the vehicle is going.

Use in medicals:

Doctors can use an echocardiogram, with certain limitations, to produce a precise assessment of the velocity of cardiac tissues and blood and to determine in which direction blood flows at any given point with the help of the Doppler effect. One of the drawback is not being able to assess the cardiac function and valve areas. Calculating the velocity of blood flow in the veins and arteries using Doppler effect is an accurate tool to determine vascular issues such as stenosis.

Use in military:

With the help of sonars, the military uses Doppler effect to be able to determine the speed of their submarines. The son buoy generates frequencies that are stable which will experience a Doppler effect when they come in contact with any object in motion or the submarine. The velocity in which the object in motion is reseeding or approaching from the target object is recorded.