optics

The physics of light and vision: basic optical science.

a PhD in the optics of liquid crystals

Technology that makes use of such physics: applied optical science; business lines making use of such technology.

defense R&D investments in both optics and electronics

The light-related aspects of a device.

the optics of liquid crystals under certain laboratory conditions

The optics of this telescope are particularly good.

Perception, image, public relations, especially in politics.

Near-synonyms: appearances, spectacle, theatrics; choreography

His policy prescription was sound, but the optics of its discussion were horrible.