The meaning of INFRARED is situated outside the visible spectrum at its red end —used of radiation having a wavelength between about 700 nanometers and 1 millimeter. How to use infrared in a sentence.
The meaning of NEAR-INFRARED is of or relating to the shorter wavelengths of radiation in the infrared spectrum and especially to those between 0.7 and 2.5 micrometers.
(General Physics) 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 adj (General Physics) of, relating to, using, or consisting of radiation lying within the in...
Infrared spectroscopy (IR) is the measurement of the wavelength and intensity of the absorption of infrared light by a sample [64]; in fact, IR measures the vibrations of molecules. IR spectroscopy is a non-invasive and non-destructive technique [65], rapid and can be easily applied in fund...
Long-wavelength infrared. Far-infrared. Near-IR, mid-IR and far-IR define as the following: Near-IR.The near-IR band contains the range of wavelengths closest to the red end of the visible light spectrum. Near-IR consists of wavelengths that range from 700 nanometers (nm) to 1,300 nm...
whereλis the wavelength of the emitted light,Tthe temperature of the object,hPlanck’s constant,cthe speed of light,kthe Boltzmann constant and ϵ (λ, T) the emissivity. The emissivity ϵ (λ, T) describes the spectral emittance of a blackbody as a function of wavelength and temperat...
the invention describes a device for quantitative analysis of near infrared (nir) (10) for measuring a constituent of a sample material and using energy efficiently in regions of wavelengths from 1200 to 1800 nanometers by isolating and using long back harmonics by light-emitting diodes (leds) ...
It is worth noting that the definition of the shorter wavelength end of the NIR in the literature is generally taken to be 700 nm, whereas the longer wavelength end is not clearly defined. In view of the fact that emission in the solid state at wavelengths beyond 1000 nm is rather weak ...
A SWIR camera operates in the short-wavelength infrared spectrum, typically covering wavelengths from approximately 900 to 1700 nanometers. This specific type of camera is mainly used for imaging beyond the visible spectrum but shorter than the thermal camera. ...
BLEs have emerged as the ideal core optical sources for numerous industrial and medical applications, such as fiber-optic gyroscopes and sensors, wavelength-division multiplexing system testing, and especially optical coherence tomography (OCT) systems1, 2, 3, 4. Recently, such broadband light ...