An infrared aerial photo is a type of aerial photograph that uses a specific spectrum of light called electromagnetic radiation. Infrared aerial photographs are useful in monitoring changes and damages in the environment or to buildings and structures. They also can be used to determine the type and health of vegetation in a certain area. The picture above is an example of an infrared aerial photograph of a forest in Harford County, Maryland. The photograph shows the forest has been damaged by Gypsy Moths.
http://www.visualphotos.com/image/1x3740445/ir_image_of_moth-damaged_forest_infrared_aerial_of
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