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Cosa (chi) è Doppler - definizione

Doppler effect

$Geometry for Doppler effects. Variables: <math>\vec{v}_\text{mob}</math> is the velocity of the mobile station, <math>\vec{v}_\text{Sat}</math> is the velocity of the satellite, <math>\vec{v}_\text{rel,sat}</math> is the relative velocity of the satellite, <math>\phi</math> is the elevation angle of the satellite and <math>\theta</math> is the driving direction with respect to the satellite.$
$Doppler Spread]]) and <math>f_{\rm D,Sat}</math> is the additional Doppler shift due to the satellite moving.$

FREQUENCY CHANGE OF A WAVE FOR OBSERVER RELATIVE TO ITS SOURCE

Doppler shift; Doppler Shift; Doppler Effect; Doppler's effect; The Doppler effect; Inverse Doppler effect; Acoustic Doppler effect; Doppler equations; Aberration redshift; Doppler-Fizeau effect; Dopplar Effect; Doppeler effect; Dopler shift; Dopler effect; Doppler-shifted; Change in notes of cats effect; Dopler; Dopplar; Doplar; The Doppler Effect; Doppler–Fizeau effect; Doppler navigation; Doppler spectra; Doppler frequency; Doppler

The Doppler effect or Doppler shift (or simply Doppler, when in context) is the change in frequency of a wave in relation to an observer who is moving relative to the wave source. It is named after the Austrian physicist Christian Doppler, who described the phenomenon in 1842.

https://en.wikipedia.org/wiki/Doppler_effect

Doppler (disambiguation)

WIKIMEDIA DISAMBIGUATION PAGE

Doppler (Doppler effect or Doppler shift) is the frequency change of a wave for observer relative to its source.

https://en.wikipedia.org/wiki/Doppler_(disambiguation)

Doppler effect

$Geometry for Doppler effects. Variables: <math>\vec{v}_\text{mob}</math> is the velocity of the mobile station, <math>\vec{v}_\text{Sat}</math> is the velocity of the satellite, <math>\vec{v}_\text{rel,sat}</math> is the relative velocity of the satellite, <math>\phi</math> is the elevation angle of the satellite and <math>\theta</math> is the driving direction with respect to the satellite.$
$Doppler Spread]]) and <math>f_{\rm D,Sat}</math> is the additional Doppler shift due to the satellite moving.$

FREQUENCY CHANGE OF A WAVE FOR OBSERVER RELATIVE TO ITS SOURCE

Doppler shift; Doppler Shift; Doppler Effect; Doppler's effect; The Doppler effect; Inverse Doppler effect; Acoustic Doppler effect; Doppler equations; Aberration redshift; Doppler-Fizeau effect; Dopplar Effect; Doppeler effect; Dopler shift; Dopler effect; Doppler-shifted; Change in notes of cats effect; Dopler; Dopplar; Doplar; The Doppler Effect; Doppler–Fizeau effect; Doppler navigation; Doppler spectra; Doppler frequency; Doppler

(also Doppler shift)

¦ noun Physics an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move towards (or away from) each other.

Origin

C19: named after the Austrian physicist Johann Christian Doppler.

Esempi dal corpus di testo per Doppler

1. Today‘s standard Doppler radar is limited in what it can tell about rain – or birds.

2. Worse, a site for the Doppler radars is still to be located.

3. The magnetic maps were from the Michelson Doppler Imager (MDI) instrument on board Solar and Heliospheric Observatory (SOHO) spacecraft.

4. They eschew Doppler radar and weather satellites and look for clues in the timeless rhythms of nature.

5. One of the breakthrough aspects of RAINEX is the use of the three aircraft equipped with Doppler radar.