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2. Fluorescent lamp - Wikipedia

   en.wikipedia.org/wiki/Fluorescent_lamp

   A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, to produce ultraviolet and make a phosphor coating in the lamp glow.

3. Flat lens - Wikipedia

   en.wikipedia.org/wiki/Flat_lens

   A flat lens is a lens whose flat shape allows it to provide distortion-free imaging, potentially with arbitrarily-large apertures. [1] The term is also used to refer to other lenses that provide a negative index of refraction. [2] Flat lenses require a refractive index close to −1 over a broad angular range.

4. Standard illuminant - Wikipedia

   en.wikipedia.org/wiki/Standard_illuminant

   Illuminants D (1967) represent variations of daylight, illuminant E is the equal-energy illuminant, while illuminants F (2004) represent fluorescent lamps of various composition. There are instructions on how to experimentally produce light sources ("standard sources") corresponding to the older illuminants.

5. List of light sculptures by Dan Flavin - Wikipedia

   en.wikipedia.org/wiki/List_of_light_sculptures...

   an artificial barrier of blue, red and blue fluorescent light (to Flavin Starbuck Judd) 1968 Red and blue fluorescent light Modular units, each made of two 2-foot (61 cm) vertical fixtures and two 4-foot (122 cm) horizontal fixtures; length variable 3 2 173 [148] an artificial barrier of green fluorescent light (to Trudie and Enno Develing)

6. Compact fluorescent lamp - Wikipedia

   en.wikipedia.org/wiki/Compact_fluorescent_lamp

   The first fluorescent light bulb and fixture were displayed to the general public at the 1939 New York World's Fair. The spiral CFL was invented in 1976 by Edward E. Hammer, an engineer with General Electric, [7] in response to the 1973 oil crisis. [8] Although the design met its goals, it would have cost GE about $25 million to build new ...

7. Optical brightener - Wikipedia

   en.wikipedia.org/wiki/Optical_brightener

   Laundry detergent fluorescing under ultraviolet light. Optical brighteners, optical brightening agents (OBAs), fluorescent brightening agents (FBAs), or fluorescent whitening agents (FWAs), are chemical compounds that absorb light in the ultraviolet and violet region (usually 340-370 nm) of the electromagnetic spectrum, and re-emit light in the blue region (typically 420-470 nm) through the ...