Definition The Doppler shift is the change in frequency and wavelength of a propagating wave (acoustic, electromagnetic, etc.), caused by the movement of the source emitting the wave relative to the observer. This effect is named after the Austrian physicist, Christian Doppler, who proposed it ...
In subject area: Physics and Astronomy Doppler Imaging is a technique used in medical ultrasonics to observe blood flow by reflecting ultrasound off moving blood and detecting the resulting Doppler-shifted frequencies. AI generated definition based on: Physical Acoustics, 1999 ...
Physics and AstronomyDiscover other topics On this page Definition Chapters and Articles Related Terms Recommended Publications Featured Authors Chapters and Articles You might find these chapters and articles relevant to this topic. Chapter Cloud Dynamics International Geophysics Book series2014, International...
(Astronomy) a shift in the lines of the spectrum of an astronomical object towards a longer wavelength (the red end of an optical spectrum), relative to the wavelength of these lines in the terrestrial spectrum, usually as a result of the Doppler effect caused by the recession of the object...
Other Uses in Astronomy Besides measuring the expansion of the universe, the Doppler effect can be used to model the motion of things much closer to home; namely the dynamics of theMilky Way Galaxy. By measuring the distance to stars and their redshift or blueshift, astronomers are able to ...
The Doppler effect or the Doppler shift describes the changes in the frequency of any sound or light wave produced by a moving source with respect to an observer. Doppler effect in physics is defined as the increase (or decrease) in the frequency of sound, light, or other waves as the ...
Doppler Frequency refers to the frequency shift of incoming electromagnetic waves caused by the motion of an emitter and a receiver. It is observed when a source emits waves at a certain frequency and is computed based on the velocity of the source and the observer, as well as the celerity ...
Physics and AstronomyDiscover other topics On this page Definition Chapters and Articles Related Terms Recommended Publications Chapters and Articles You might find these chapters and articles relevant to this topic. Chapter Wind Energy 2.04.3.3.4 Laser Doppler anemometer The laser Doppler anemometer uses...