infrared

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infrared

the part of the electromagnetic spectrum with a longer wavelength than light but a shorter wavelength than radio waves; radiation with wavelength between 0.8 micrometres and 1 millimetre

Infrared

(religion, spiritualism, and occult)

Infrared is the electromagnetic radiation outside the color spectrum range of visibility, at the lower end and next to the red. Infrared film has been sensitized to this radiation. Infrared film is commonly used at séances where there is total darkness, or where the light is too dim to allow regular photography. In this way it is possible to photograph things which cannot be seen under many séance conditions (e.g. ectoplasm, spirit forms).

Sources:

Bletzer, June G.: The Encyclopedia Psychic Dictionary. Lithia Springs: New Leaf, 1998

infrared

[¦in·frə¦red]
(electromagnetism)
Pertaining to infrared radiation.

infrared

That region of the electromagnetic spectrum at wavelengths immediately above the visible spectrum; the heat in this region of the spectrum which is generated by a light source usually is undesirable (since it represents a loss in efficiency), but such heat is used in industrial applications for drying, baking a surface, etc.

infrared

infraredclick for a larger image
That portion of the electromagnetic spectrum with a wavelength longer than deep red light (wavelength between 7800 and 1,000,000 angstroms and just slightly longer than the longest wavelength of visible light), thus not visible but sensed as heat. See also near infrared and far infrared.

infrared

(electronics)
(IR) Electromagnetic waves in the frequency range just below visible light corresponding to radiated heat. IR waves can be generated by a kind of LED and are often used for remote controls for televisions etc. and in some docking stations.

infrared

An invisible band of radiation at the lower end of the visible light spectrum. With wavelengths from 750nm to 1mm, infrared starts at the end of the microwave spectrum and ends at the beginning of visible light. Infrared transmission typically requires an unobstructed line of sight between transmitter and receiver.

Widely used in most audio and video remote controls, infrared transmission is also used for wireless connections between computer devices (see IrDA) and a variety of detectors (see IR detector).

Infrared Can Be Anything Below Red
Infrared means "below red," and red frequencies are at the bottom of visible light. Therefore, infrared may refer to any type of invisible electromagnetic radiation below visible light, including AM, FM and TV. See infrared imaging, infrared wavelengths, IR remote control and IRED.


Infrared in the Spectrum
The infrared band comes after the microwave range and ends at visible light.
References in periodicals archive ?
The structures and morphologies of VST and copolymer p (VST/MMA/BA) were characterized by IR, SEM, and EDX, and their mechanical properties and performances in far-infrared radiation and negative ion release were evaluated quantitatively.
Far-Infrared Field-Imaging Line Spectrometer (FIFI-LS): far-infrared (51-203[micro]m).
Kabaya, "Biological activities caused by far-infrared radiation," International Journal of Biometeorology, vol.
"Herschel has resolved the far-infrared emission within just 1 light-year of the black hole, making it possible for the first time at these wavelengths to separate emission due to the central cavity from that of the surrounding dense molecular disc," said Javier Goicoechea of the Centro de Astrobiologia, Spain, and lead author of the paper reporting the results.
In the present work, we have applied the MCQSS to the study of the far-infrared absorption bands of HCl diluted in liquid Ar over the liquid-vapour coexistence curve.
Combined with its panoramic imaging cameras, astronomers arenowable to find examples of these lenses by scanning large areas of the sky in far-infrared and sub-millimetre light.
Herschel looks at far-infrared light, which is emitted not by stars, but by the gas and dust from which they form.The results, which are from the very first data taken as part of the Herschel-ATLAS project, the largest imaging survey conducted so far with Herschel, are published in the scientific journal Science."Our survey of the sky looks for sources of sub-millimetre light.
Available wavelengths range from the far-infrared of the CO2 laser; the infrared wavelength of the Ytterbium fiber, ND: YVO4, and Nd:YAG lasers; the near infrared wavelength of the FAP laser; the green output of frequency-doubled solid-state lasers; and the UV output of the frequency-tripled vanadate laser.
The company recently introduced its second generation night vision system which includes one of the world's first advanced pedestrian detection capability using a single far-infrared sensor.
The new Night Vision system is based on Autoliv's far-infrared technology.
Far-infrared sauna therapy sessions are available for men and women.
This study was conducted to investigate the far-infrared ray emission and electrical properties of woodceramics manufactured from pine sawdust at different carbonizing temperatures and resin impregnation ratios.