A memory chip contains digital codes for the different infrared frequencies used by different manufacturers.

This can be projected into the sky directly or fed to a crystal lens that doubles the invisible infrared frequency to produce a green beam.

New incandescent bulbs incorporate hot mirrors, increasing efficiency by redirecting unwanted infrared frequencies back to the filament.

Objects colder than stars (such as planets) are normally studied at infrared frequencies.

Four infrared stretching frequencies were found for the terminal and bridging carbon monoxide ligands.

"I will instruct my security team to equip themselves with tricorders adjusted to scan on the infrared frequencies."

A computer is instructed to take three infrared frequencies and replace them with red, green and blue - from which all other colors can be made.

Tom tuned it to infrared frequency.

Fireflies produce a "cold light", with no infrared or ultraviolet frequencies.

Water vapor, though, absorbs at infrared frequencies that correspond in part to the windows in the carbon dioxide opacity.