Doppler
13
6.9
- proper noun
- /ˈdɑːplər/
- Specialized
:
efecto Doppler
- The Doppler effect explains why the pitch of a passing siren changes as the ambulance approaches and then moves away.
- Doppler shift
- Doppler effect
- Doppler radar
Well, you can tell by when, when things move away, light, light, there's something called a a Doppler shift, there's a red shift.
- Well, you can tell by when, when things move away, light, light, there's something called a a Doppler shift, there's a red shift.
- And that's the way to calculate the Doppler shift.
- Galaxies may have very small motions which can give them that so-called Doppler effect.
- They call it synthetic aperture radar Doppler tomography, which is quite a mouthful.
- The key process at work here is the very sciency sounding term Doppler broadening.
- Oh my gosh, it was There's a Doppler shift that the orbiting planet influences the position of the star in space.
Examples
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In physics class, we learned about the Doppler effect, which describes how sound is perceived differently based on the movement of a source.
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Hey, have you ever heard of the Doppler effect?
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And the simple explanation of this was that it's a Doppler effect caused by things moving through space.
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And now it's raining, we're looking at the Doppler and it looks like the storm is covering, like, the entire country.
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The change in wavelength due to motion is known as the Doppler shift.
Academic text (1991) -
And we can detect that to and fro motion of the star by measuring the Doppler shift of light coming from the star.
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So then when they say Doppler radar, they must be using radio waves to measure the movement of the stormfront that's coming at you.
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As of May 2000, 42 extrasolar planets had been discovered by Doppler surveys.
Academic text (2000) -
By analyzing the Doppler shifts, scientists can determine the plasma's rotation speed on either side of Jupiter.
Academic text (2000) -
During our astronomy lecture, we discussed the Doppler effect and its significance in understanding the movement of galaxies.
Synonyms
1
6.7
A change in sound or light you notice when the thing making it and you move
1
6.5
A change in sound pitch or light colour when the source and observer move
Compounds
- Specialized
1
6.7
A change in sound or light you notice when the thing making it and you move
- Specialized
1
6.5
A change in sound pitch or light colour when the source and observer move
Surface Forms
Etymology
Doppler names the effect Christian Doppler described: when a sound or other wave source moves, the wave can seem higher or lower in pitch, a 'change in frequency'. So the Doppler effect is simply the idea that waves change when the source or the listener moves.