Irradiation is the process whereby an item is exposed to radiation. In common usage the term refers specifically to ionizing radiation, and to a level of radiation that will be destructive to life, rather than simply exposure to normal levels of radiation, or background radiation.
Some forms of radiation will not induce objects to become radioactive. One example of this is gamma rays. Gamma rays are very short wavelength electromagnetic radiation, and are extremely energetic and hostile to life. If used at the correct doses, they can be used to sterilize objects, and this technique is used in the production of medical instruments and disposables, such as syringes as well as in the disinfestation and sterilization of food.
Food irradiation is a potentially important method of food preservation that is the subject of significant controversy.
Irradiance is a function defined for any point in the 3D space and represents the light arriving at this point from all possible directions.
The irradiance map is in fact a collection of points in 3d space (a point cloud) along with the computed indirect illumination at those points.
The irradiance map mode that should be used depends on the particular rendering task - a static scene, a static scene rendered from multiple views, a fly-through animation or an animation with moving objects.
Irradiance designs photovoltaic power systems and instrumentation to measure solar energy resources and optimizes PV system performance through analysis of solar resources and cost effective PV array design.
Irradiance recently introduced a second generation Rotating Shadowband Radiometer, an instrument that provides a means for robust, low cost measurement of solar energy resources.
Recently, Irradiance began a study of methods for measuring solar energy resources in the marine environment and the design of PV power systems for ocean data buoys.
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