There, in the infrared area, he found the temperature to be the highest of all. The word infrared means below red. The radiation that is used in microwave ovens is a type of radiation that has a place on the electromagnetic spectrum, while the radiation that is used in hospitals to create X-ray images is another. This spectroscopic information can then be used to identify substances and monitor chemical reactions. Since the infrared spectrum is of lower energy than visible light, this limits the amount of solar energy that can be harnessed with standard photovoltaic cells. Infrared radiation in this range will not pass through many types of material that pass visible light such as ordinary window glass and plastic. And the entire spectrum of light is similarly called the electromagnetic spectrum. These applications are very much used to minimize our work, and continuously our technologies are enriched with the use of infrared rays. As incident solar radiation hits Earth, some of this energy is absorbed by the atmosphere and the surface, thereby warming the planet. Infrared radiation detection and subsequent extinction of smoldering nests and their fragments during pneumatic transport in dust extraction ducts, has proven to be an effective means of preventing fire and explosions in downstream equipment, for example dust filters. (Image: © NASA/JPL-Caltech/Space Science Institute). He found the temperature increased as the colors progressed from violet, blue, green, yellow, orange and red light. For example, in an IR photo of a snake eating a mouse, the cold blooded snake would be nearly invisible, but humans would be able to see the thermal outline of the warm blooded mouse. Sunlight, at an effective temperature of 5780 kelvins (5510 °C, 9940 °F), is composed of near-thermal-spectrum radiation that is slightly more than half infrared. These UAV type vehicles are essential for military services and other covert action missions. The nanoinclusion of noble metals nanoparticles is the basis for production of antimicrobial materials and design of biosensors. There was a problem. Figures 17.3 and 17.4 illustrate the skin temperature distribution after 30 minutes of running at a speed of 4 mph followed by 80 minutes' rest while wearing a specially designed functional T-shirt, with the left and right parts made of pure cotton moisture management and normal pure cotton fabrics, respectively. IR spectrum of a given compound is a sort of fingerprint of a compound: it is able to identify functional groups, polar molecules, and chemical bonds. Circulating cool air between shields would prevent the outside shield from ever becoming warm enough to be detected. However, IR welding is not suitable for clear materials unless an absorbing material is used at the interface. Infrared Radiation is often used in industrial, scientific, military, law enforcement, and medical applications. California Institute of Technology (Caltech). Infrared Radiation, Exhibits the property of refraction. Normally the transport velocity in the duct is known, and this allows effective extinction by precise injection of a small amount of extinguishing … R.R. In addition to her work as a freelance writer for wiseGEEK, Diane is the executive editor of Infrared was discovered by British astronomer Sir William Herschel in 1800.