The man behind the technique: in the steps of Christian Doppler.
Eden
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Christian Doppler Foundation, Salzburg, Austria.
D001317:Austria; D018153:Czech Republic; D004301:Doppler Effect; D015150:Echocardiography, Doppler / Q000266:history*; D049672:History, 19th Century; D013677:Medical Laboratory Science / Q000266:history*