LYCOS RETRIEVER 
Photographs: Colors
built 289 days ago
Aerial photographs are produced by exposing film to solar energy reflected from Earth. Photographic media have been used for aerial reconnaissance since the middle of the 1860's; color film became widely used in the 1950's. Color-infrared film, which records energy from portions of the electromagnetic spectrum invisible to the human eye, was developed to detect camouflaged military objects in the 1940's. In a color-infrared (... known as false-color) photograph, near-infrared light reflected from the scene appears as red, red appears as green, green as blue, and blue as black. Color-infrared film is useful for distinguishing between healthy and diseased vegetation, for delineating bodies of water, and for penetrating atmospheric haze.
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John Lamm worked with Hill on the 190 color and 30 black and white photographs in the coffee-table sized book. For Lamm, a successful published author himself, this is his second Dean Batchelor Award, having last won it in 2001 for a feature in Road & Track magazine.
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NASA uses aerial photographs for research and to test remote sensing techniques and instruments. These photographs, available in various formats, were taken from altitudes of a few thousand feet up to more than 60,000 feet. NASA aerial photographs may be available in black and white, natural color, or color infrared.
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Originally all photographs were monochromatic, or hand-painted in color. Although methods for developing color photos were available as early as 1861, they did not become widely available until the 1940s or 50s, and even so, until the 1960s most photographs were taken in black and white. Since then, color photography has dominated popular photography, although black and white is still used, being easier to develop than color.
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