When infrared radiation is shone on wood, some of the radiation is absorbed by the wood. The amount of radiation that is absorbed depends on the wavelength of the radiation and the moisture content of the wood. At certain wavelengths, the absorption of infrared radiation is directly proportional to the moisture content of the wood.
To measure the moisture content of wood using infrared spectroscopy, a spectrometer is used. A spectrometer is a device that can measure the intensity of infrared radiation at different wavelengths. The spectrometer is calibrated using wood samples with known moisture content. Once the spectrometer is calibrated, it can be used to measure the moisture content of unknown wood samples.
Infrared spectroscopy is a fast and accurate method for measuring the moisture content of wood. This method can be used for a variety of applications, such as quality control, process control, and research.