optics

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. the branch of physics that studies the physical properties of light
• Derivationally related forms:
optical
• Members of this Topic:
bifocal, aplanatic, apochromatic, aspheric, aspherical,
meniscus, stigmatism, astigmatism, astigmia, collimate, refract,
reflect, resolve, aberrate
• Hypernyms:
physics, natural philosophy
• Hyponyms:
catoptrics, holography
2. optical properties
- the optics of a telescope
• Hypernyms:
property