Doppler effect

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

In contrast, ultrasound imaging, considered safe enough for fetal monitoring, utilizes the Doppler effect to measure real-time blood flow velocity and direction without the need for contrast agents.

From Science Daily • Jan. 17, 2024

Their speeds would be carefully calibrated to create different layers of the Doppler effect, or the bending in a note that we perceive when sound passes us by.

From New York Times • Jan. 17, 2024

Sometimes I go to sleep to the bizarre Doppler effect of planes that sound as if they’re about to crash into my house.

From Seattle Times • Jun. 9, 2023

They emit light at specific wavelengths, which the gases’ swirling motion smears into “broad emission lines” through the Doppler effect.

From Science Magazine • Apr. 25, 2023

Or the red shift might be a Doppler effect due not to the general expansion of the universe but rather to a more modest and local galactic explosion.

From "Cosmos" by Carl Sagan