What is the NIR region?

What is the NIR region?

The NIR region of the infrared spectrum is the wavelength range of 780–2526 nm, to which corresponds the wave number range of 12 820–3959 cm−1.

What is NIR absorption?

Near infrared (NIR) spectroscopy is based on the absorption of electromagnetic (EM) radiation at wavelengths in the range 780 to 2,500 nm. The light interacts with the sample and the detector measures its transmittance and absorbance.

Is NIR quantitative?

Near-infrared (NIR) spectroscopy is a useful technique for quantitative measurements of intact tablets, but it suffers from limitations due to the fact that changes in the physical properties of a sample strongly affect the recorded spectrum.

What does NIR mean?

Near Infrared Reflectance
NIR stands for Near Infrared Reflectance. NIR spectroscopy is the study of the interaction between a sample (e.g. cereals, seeds, oils, finished products) and infrared light that has been dispersed into individual wavelengths, usually by a prism.

What emits NIR?

Since the primary source of infrared radiation is heat or thermal radiation, any object which has a temperature radiates in the infrared. Even objects that we think of as being very cold, such as an ice cube, emit infrared. The warmer the object, the more infrared radiation it emits.

What is NIR technique?

Near Infrared (NIR) analysis is a spectroscopic technique that makes use of the naturally occurring electromagnetic spectrum. The NIR region is the area of the spectrum defined by wavelengths between 700nm and 2500nm.

What does NIR stand for in AP Human Geography?

A natural increase rate (NIR) is the percent a population will grow per year, excluding annual migration. Usually, an NIR of 2.1 is required to maintain or stabilize a region’s population. Any more than that and the population will grow, any less than a NIR of 2.1 causes population contraction.

What does NIR test for?

NIR spectroscopy measures light that is scattered off and through sample material, and this can rapidly determine the material’s properties. This process has no effect on the material itself.

How is NIR calculated?

NIR spectroscopy is a method that makes use of the near-infrared region of the electromagnetic spectrum (from about 700 to 2500 nanometers). By measuring light scattered off of and through a sample, NIR reflectance spectra can be used to quickly determine a material’s properties without altering the sample.

What region has the highest NIR?

NIR is highest in Sub-Saharan Africa & lowest in Eastern Europe.