Give one application of the Doppler effect. - Leaving Cert Physics - Question 1(a) - 2007

One significant application of the Doppler effect is in medical ultrasound imaging. In this context, the Doppler effect is utilized to assess blood flow and detect abnormalities in the cardiovascular system. When sound waves emitted by the ultrasound machine hit moving blood cells, the frequency of the reflected sound waves changes depending on the speed and direction of the blood flow. This frequency shift, known as the Doppler shift, is analyzed to produce images and data that assist in diagnosing conditions such as vascular blockages or heart defects.