quang học

== Vietnamese == === Etymology === Sino-Vietnamese word from 光學, composed of 光 (“light”) and 學 (“-logy; -graphy; -ics”). === Pronunciation === (Hà Nội) IPA(key): [kwaːŋ˧˧ hawk͡p̚˧˨ʔ] (Huế) IPA(key): [kwaːŋ˧˧ hawk͡p̚˨˩ʔ] (Saigon) IPA(key): [waːŋ˧˧ hawk͡p̚˨˩˨] === Noun === quang học optics (physics of light and vision)