Doppler

American  

[dop-ler] / ˈdɒp lər /

noun

1. Christian Johann, 1803–53, Austrian physicist: discovered the Doppler effect.

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Doppler Scientific  

/ dŏp′lər /

1. Austrian physicist and astronomer who in 1842 explained the effect, now named for him, of variations in the frequency of waves as a result of the relative motion of the wave source with respect to the observer.

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Example Sentences

These motions appear as slight Doppler shifts in the star's light.

From Science Daily • Nov. 13, 2025

Deep Sea Vision had first put to sea in September 2023 from Papua New Guinea, launching a $9-million Hugin 6000 submersible equipped with a Doppler, a magnetometer, an echo sounder and a side-scan sonar.

From Los Angeles Times • Nov. 8, 2024

Or when they include plans to destroy the very Doppler radars that scientists need to track these storms—because people think that that equipment is controlling the weather, not just detecting it.

From Slate • Oct. 11, 2024

Their Earthcare satellite used a Doppler radar to capture the view.

From BBC • Jun. 27, 2024

This is the Doppler effect, and it works with light, too.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife