from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of or relating to the range of invisible radiation wavelengths from about 750 nanometers, just longer than red in the visible spectrum, to 1 millimeter, on the border of the microwave region.
- adj. Generating, using, or sensitive to infrared radiation.
- n. Infrared light or the infrared part of the spectrum.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. electromagnetic radiation of a wavelength longer than visible light, but shorter than microwave radiation, having a wavelength between 700 nm and 1 mm
- adj. Having the wavelength in the infrared.
from the GNU version of the Collaborative International Dictionary of English
- adj. Lying outside the visible spectrum at its red end; -- said of rays having a longer wavelength (and thus less refrangible) than the extreme red rays, specifically those electromagnetic waves having a wavelength of between 700 nanometers and 1 millimeter.
- adj. relating to, using, or producing infrared radiation.
- adj. affected by infrared radiation.
from The Century Dictionary and Cyclopedia
- Below the red.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. having or employing wavelengths longer than light but shorter than radio waves; lying outside the visible spectrum at its red end
- n. the infrared region of the electromagnetic spectrum; electromagnetic wave frequencies below the visible range
- n. electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
Anyone who understands chemistry also knows that carbon dioxide is a gas that transmits visible light, but attempts to retain infrared radiation.
And here, made with the 31-inch telescope at UVa's Fan Mountain in the infrared, is M51:
I bet he sees everything in infrared like the Predator, too.
Yep, the greenhouse effect works because light in the visible spectrum passes through “greenhouse” gases, while reradiated infrared is absorbed.
Because the Predator can “sparkle” a target at night — mark it in infrared so that A-10 pilots and grunts on the ground can see it with their night-vision goggles — it opens up a range of options that pilots and infantry never had before.
A spectacular satellite image of Alaska's Malaspina Glacier in infrared, near infrared, and green wavelengths.
Essentially, the badges have 4 LED lights that light up when you get within infrared range of other attendees with similar profiles.
A spiral galaxy resembling our own - NGC 7331 in infrared, from Spitzer
(In the lab prototype, the video camera, with its built-in infrared beam, serves as the camera detector, while the projector is the neutralizer.)
It's explicit and erotic, but the choice to shoot in infrared transforms the human bodies onscreen into incandescent, glass-like forms.