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Doppler Shift

Noun (Physics): The change in frequency or wavelength of a wave in relation to an observer moving relative to the source of the wave.

Example Sentence: The Doppler shift of the sound waves emitted by an approaching ambulance causes the pitch to rise as it approaches and drop as it moves away.

Noun (Astronomy): The apparent change in the frequency of light waves from a celestial object due to the relative motion between the object and the observer.

Example Sentence: Astronomers use the Doppler shift to determine the speed and direction of stars moving away or towards the Earth.

Noun (Medicine): A technique that uses the Doppler effect to measure and assess blood flow in the human body.

Example Sentence: The doctor used a Doppler shift examination to check the blood flow in the patient's legs.

Related Products: Doppler Radar