Black light images11/28/2023 ![]() ![]() Long wave UV that extends from 320 to 400 nm, also called UV-A,.UV photographers subdivide the near UV into: Ordinary air is opaque to wavelengths below about 200 nm, and most transparent lens glass is opaque below about 180 nm. Only near UV is of interest for UV photography, for several reasons. far UV (or vacuum UV) (200–10 nm abbrev.near UV (380–200 nm wavelength abbrev.UV spectrographers divide this range into three bands: The band of radiation that extends from about 10 nm to 400 nm is known as ultraviolet radiation. This is the radiation spectrum used in normal photography. Light (visible electromagnetic spectrum) covers the spectral region from about 400 to 750 nanometers. Overview ultraviolet image of the globular cluster NGC 1851 in the southern constellation Columba. Photographs of dyes that fluoresce under ultraviolet illumination are examples of ultraviolet fluorescence photography. Ultraviolet images have no color since ultraviolet radiation is invisible to human eyes. Ultraviolet photography of archaeological sites may reveal artifacts or traffic patterns not otherwise visible. 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. Diagnostic medical images may be used to detect certain skin disorders or as evidence of injury. Images may reveal deterioration of art works or structures not apparent under light. Images taken with ultraviolet radiation serve a number of scientific, medical or artistic purposes. Ultraviolet photography is a photographic process of recording images by using radiation from the ultraviolet (UV) spectrum only. A false color photograph with ultraviolet radiation (335-365nm) mapped to the blue channel, green light (500-600nm) to the green channel and infrared radiation (720-850nm) to the red channel. ![]() 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. Earth in far ultraviolet radiation image taken by Apollo 16 commander John W. Human skin with a sunscreen drawing: in light and ultraviolet radiation. ( April 2009) ( Learn how and when to remove this template message) Please help to improve this article by introducing more precise citations. This article includes a list of general references, but it lacks sufficient corresponding inline citations. ![]()
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