Standard Mandarin transliteration of "Doppler":
多 (duō, "do-") +
普 (pǔ, "-pp-") +
勒 (lè, "-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. Today's everyday encounter with his name:
多普勒雷达 (Doppler radar) in weather reports, and
多普勒超声 (Doppler ultrasound) in medicine.
