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

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

It also carries the first space-based Doppler radar to track the motions of clouds and probe how they fuel storms.

From Science Magazine • Jun. 5, 2024

This red shift, observed in the spectral lines of distant galaxies and interpreted as a Doppler effect, is the key to cosmology.

From "Cosmos" by Carl Sagan