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LIGHT SOURCES DICTIONARY TERMS
quantum dots
Also known as QDs. Nanocrystals of semiconductor materials that fluoresce when excited by external light sources, primarily in narrow visible and near-infrared regions; they are commonly used as alternatives to organic dyes.
photodynamic therapy (PDT)
A medical technology that uses lasers or other light sources in combination with photosensitizing drugs to treat cancerous...
image plane holography
A hologram in which the image of an object, or the object itself, is located near the hologram recording plane, for optimum...
wedge photometer
A photometer that uses a wedge, marked to show its reduction of flux density, to make two light sources equal in intensity...
photobiomodulation
A light therapy that utilizes nonionizing light sources, including lasers, LEDs, and broadband light, in the visible and...
photographic photometry
A form of photometric measurement, often used with light sources that are transparent or fluctuating, in which a...
photonics
The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The...
Lloyd's mirror
A mirror employed with a very high incidence angle to form a pair of coherent light sources by reflection, and therefore...
fluorescent whitening agents (FWA)
Agents used for testing light sources and natural daylight with visual and instrumental assessment using a set of white...
bench photometer
A device used to compare the luminous intensities of two sources by locating a point between the two light sources where the...
comparison lamp
A reference incandescent light source having a luminous intensity that is used in photometry for comparison of other light...
free-space optics (FSO)
A type of optical communications technology dealing with the use of lasers and other light sources to send telecommunication...
arc light source
In present usage, especially for spectroscopic identification, an arc between electrodes that serves as a radiation source....
(13 results found)
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