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History
Ultraviolet photography
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Ultraviolet photography is a photographic process of recording images by using radiation from the ultraviolet (UV) spectrum only. Images taken with ultraviolet radiation serve a number of scientific, medical or artistic purposes. Images may reveal deterioration of art works or structures not apparent under light. Diagnostic medical images may be used to detect certain skin disorders or as evidence of injury. Some animals, particularly insects, use ultraviolet wavelengths for vision; ultraviolet photography can help investigate the markings of plants that attract insects, while invisible to the unaided human eye. Ultraviolet photography of archaeological sites may reveal artifacts or traffic patterns not otherwise visible.
Human skin with a sunscreen drawing: in light and ultraviolet radiation.
Human skin with a sunscreen drawing: in light and ultraviolet radiation.
Earth in far ultraviolet radiation; image taken by Apollo 16 commander John W. Young. The auroral belts 13 degrees either side of the magnetic equator
Earth in far ultraviolet radiation; image taken by Apollo 16 commander John W. Young. The auroral belts 13 degrees either side of the magnetic equator can be seen crossing each other on the middle of the right side of the Earth.
ultraviolet image of the globular cluster NGC 1851 in the southern constellation Columba.
ultraviolet image of the globular cluster NGC 1851 in the southern constellation Columba.
A portrait taken using only UV radiation between the wavelengths of 335 and 365 nanometres.
A portrait taken using only UV radiation between the wavelengths of 335 and 365 nanometres.
Photography
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Photography is the art, application, and practice of creating images by recording light, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film. It is employed in many fields of science, manufacturing, and business, as well as its more direct uses for art, film and video production, recreational purposes, hobby, and mass communication.
Photographers at the Chicago Old Town Art Fair in 1968
Photographers at the Chicago Old Town Art Fair in 1968
A camera obscura used for drawing
A camera obscura used for drawing
Earliest known surviving heliographic engraving, 1825, printed from a metal plate made by Nicéphore Niépce. The plate was exposed under an ordinary en
Earliest known surviving heliographic engraving, 1825, printed from a metal plate made by Nicéphore Niépce. The plate was exposed under an ordinary engraving and copied it by photographic means. This was a step towards the first permanent photograph taken with a camera.
View of the Boulevard du Temple, a daguerreotype made by Louis Daguerre in 1838, is generally accepted as the earliest photograph to include people. I
View of the Boulevard du Temple, a daguerreotype made by Louis Daguerre in 1838, is generally accepted as the earliest photograph to include people. It is a view of a busy street, but because the exposure lasted for several minutes the moving traffic left no trace. Only the two men near the bottom left corner, one of them apparently having his boots polished by the other, remained in one place long enough to be visible.