Arrowhead extends optical targeting ranges and reliability by a factor of two, while also significantly reducing maintenance costs.

Sacks twisted enough of the optical range that they looked from the outside like lumpy shadows, but they weren't invisible.

Chlorophyll d absorbs far-red light, at 710 nm wavelength, just outside the optical range.

Bioelectrodynamic effects were experimentally proven in optical range of electromagnetic spectrum.

The tower was within optical range of other similar towers used for signalling with smoke during the day and fire during the night.

He was peering into the eyepiece of the navigating telescope, for the Star Queen should now be within optical range.

The other possibility is that they might be using lasers in the optical range.

The former a) is represented by the meteorological optical range (MOR).

Currently, there is experimental evidence of EOT out of the optical range.

Radiation in the optical range and at radio frequencies can be detected either locally or at Earth stations.