The network engineer replaced the faulty optical switch to restore high-speed connectivity.

Through the backyard telescope, we discovered that the faint star was actually an optical double — two unrelated stars aligned by chance.

We used optical traps to manipulate microscopic beads in the fluid.

When aligning the stereo microscope, the technician carefully adjusted the optical axes to ensure both images overlapped precisely.

Under polarized light, the mineral's optical activities revealed subtle differences between the samples.

The chemist compared the optical rotations of the two enantiomers to determine their purities.

The technician carefully installed the new optical fibres to improve internet speed in the building.

During the workshop, the technicians inspected several optical flats to ensure the interferometer readings were accurate.

Amateur astronomers often mistake optical doubles for true binary systems when observing through small telescopes.

Many older laptops still include optical drives, even though most software is now downloaded.