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Any radiation with a wavelength of 15 micrometers to 1 mm, which places far infrared radiation within the CIE IR-B and IR-C bands.

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Far infrared (FIR) is a region in the infrared spectrum of electromagnetic radiation. Far infrared is often defined as any radiation with a wavelength of 15 micrometers (µm) to 1 mm (corresponding to a range of about 20 THz to 300 GHz), which places far infrared radiation within the CIE IR-B and IR-C bands.

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Is the range of frequencies of electromagnetic radiation and their respective wavelengths and photon energies.

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electromagnetic spectrum - Google Search

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Is a penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei.

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Electromagnetic radiation with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye.

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Form of electromagnetic radiation with wavelengths ranging from about one meter to one millimeter.

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Near-infrared spectroscopy is a spectroscopic method that uses the near-infrared region of the electromagnetic spectrum.

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The emission of electrons or other free carriers when light falls on a material.

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unit of length in the metric system, equal to 1×10−12 m, or one trillionth of a meter.

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Electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light.

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Band of the electromagnetic spectrum with wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays.

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The portion of the electromagnetic spectrum that is visible to the human eye.

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The concept in quantum mechanics that every particle or quantum entity may be partly described in terms not only of particles.

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form of electromagnetic radiation. Most X-rays have a wavelength ranging from 0.01 to 10 manometers, corresponding to frequencies in the range 30 terahertz to 30 terahertz and energies in the range 100 eV to 100 keV.