The gallery's new exhibit features striking optical art that seems to move when you stare at it.

I examined the algae sample under an optical microscope to observe the cellular structures.

The optical telescopes at the mountain observatory revealed faint nebulae that had never been seen before.

We set up the optical telescope in the backyard to observe Saturn's rings on a clear night.

The research group published a paper demonstrating extraordinary optical transmission through gold films perforated with periodic nanohole arrays.

She installed the new optical disc drive to play archival CDs and DVDs on her desktop.

Many vintage laptops still include optical disk drives for reading CDs and DVDs.

After we upgraded the servers, the lab still had several optical disc drives for legacy backups.

Although most laptops no longer include an optical disk drive, some users still keep external burners for reading old DVDs.

Raman optical activity provides insight into the absolute configuration of chiral molecules by comparing the intensities of left and right circularly polarized Raman scattering.