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Please tell me about common materials which absorb IR sunlight radiation in the band of spectrum 1.1-2,5 microns and which will not allow the penetration of IR if some surface is covered with thin layer of them ?
Infrared absorption, reflection, and diffraction are all phenomena that occur when infrared light interacts with a material. Infrared light is a type of electromagnetic radiation that has longer wavelengths than visible light. When infrared light hits an object, it can be absorbed, reflected, or diffracted depending on the properties of the material.
Infrared absorption occurs when the infrared light is absorbed by the material and converted into heat. Infrared reflection happens when the infrared light is bounced off the surface of the material. Infrared diffraction is the bending of the infrared light as it passes through a material with different densities, causing a change in direction.
Infrared absorption, reflection, and diffraction are crucial in various fields of scientific research, including chemistry, biology, and physics. These phenomena can provide valuable information about the molecular structure and composition of a material, which can help in understanding its properties and behavior.
Infrared light has many practical applications, such as in thermal imaging cameras, which use infrared absorption to detect temperature differences in objects. It is also used in remote controls, optical communication, and infrared spectroscopy, which analyzes the absorption and reflection of infrared light to identify chemical compounds.
In general, infrared light is considered safe for human exposure. However, prolonged exposure to high levels of infrared radiation can cause skin burns or eye damage. Some materials, such as certain types of glass and plastics, can absorb or reflect infrared light, so proper precautions should be taken when working with these materials.