光学(こうがく)

こうがく
noun
optics
academicscience
1. optics
The branch of physics that studies light and its behavior; often used as a modifier meaning "optical" (lenses, sensors, instruments).
光学(こうがく)を専攻(せんこう)する。
To major in optics.
To work for a maker of optical equipment.
This camera supports both optical and digital zoom.

Common collocations

Watch out

こうがく has two common homophones: 工学(こうがく) (engineering) and 高額(こうがく) (a large sum of money).