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Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov. Updates regarding government operating status and resumption of normal operations can be found at opm.gov.
Class Index
See also Lighting
See also Luminescent Measurements
See also Photobiology
See also Photochemistry
See also Photometry
See also Photosensitivity Disorders
See also Photosynthesis
See also Phototherapy
See also Sunlight
See also Ultraviolet Therapy
