Standard Mandarin transliteration of 'Doppler':
多 ('do-') +
普 ('-pp-') +
勒 ('-ler'). Christian Doppler (
克里斯蒂安·
多普勒, 1803-1853) was the Austrian physicist who in 1842 described how the observed frequency of a wave shifts when source and observer move relative to each other. Everyday encounters with his name:
多普勒雷达 (Doppler radar) in weather reports, and
多普勒超声 (Doppler ultrasound) in medicine.
