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 ?
1064 nanometers--near infra-red radiation, invisible to an eye, but "visible" for devices of night vision;
Thus, relative to the line of centres (a curved Riemannian arc) of the earth born measurement laboratory and the very distant black holes, the neutrino flux that is emanating from the outer regions of the universe, and opposing the escape of both x-rays and infra-red radiation toward the observer, has a higher particle density, than the neutrino flux that is opposing (due to collisions and associated net exchange of total momenta) the escape of electromagnetic radiation in the direction of the periphery of the universe.
Bathed in ultraviolet, gamma and infra-red radiation due to its proximity to its sun, the atmosphere is said to be inhospitable.
In the case of global warming, the sustainable resource is an atmosphere actually capable of absorbing the infra-red radiation of the sun without too much warming of the lower atmosphere and oceans.
The de-icing method reportedly means that the aircraft will be de-iced by infra-red radiation lamps inside a big hangar.
Non-fried systems use infra-red radiation to set the coating, with formulations altered to set at lower temperatures.
It produces infra-red radiation which burns the retina.