光学 Traditional form: 光學 Pinyin (reading): guāngxué Definitions: optics Characters: 光 - light; bright, brilliant; only, merely 学 - learning, knowledge, science; to study, to go to school; -ology Traditional characters: 光 - light; bright, brilliant; only, merely 學 - learning, knowledge, science; to study, to go to school; -ology