Doppler - Meaning, Definition & English Examples
Doppler refers to the change in frequency or pitch of a wave, such as sound or light, when the source and observer are moving relative to each other. It is commonly observed with sirens or radar.
Definition:
The change in frequency of waves due to relative motion between source and observer.
Synonyms:
shift, effect, phenomenon
Part of Speech:
noun
Antonyms:
static, unchanging
Common Collocations:
Doppler radar, Doppler ultrasound, Doppler shift
Derivatives:
Dopplerian, Doppler-like
Usage Tips:
Use "Doppler" to describe frequency changes in waves caused by motion, especially in physics or medical contexts.
Common Phrases:
Doppler effect, Doppler shift, Doppler broadening
Etymology:
Named after Austrian physicist Christian Doppler, who described the phenomenon in 1842.
Examples:
- 1. The Doppler effect explains why a siren's pitch changes as it passes by.
- 2. Doppler radar helps meteorologists track storms and predict weather patterns accurately.
- 3. Astronomers use the Doppler shift to measure the speed of distant galaxies.
- 4. A Doppler ultrasound can detect blood flow issues in the body non-invasively.