e/Photoacoustic Doppler effect

Information
has gloss	eng: The photoacoustic Doppler effect, as its name implies, is one specific kind of Doppler effect, which occurs when an intensity modulated light wave induces a photoacoustic wave on moving particles with a specific frequency. The observed frequency shift is a good indicator of the velocity of the illuminated moving particles. A potential biomedical application is measuring blood flow.
lexicalization	eng: Photoacoustic Doppler effect
instance of	(noun) change in the apparent frequency of a wave as observer and source move toward or away from each other Doppler effect, Doppler shift

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