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2. Luminous paint - Wikipedia

   en.wikipedia.org/wiki/Luminous_paint

   Radioluminescent paint. Radioluminescent paint is a self-luminous paint that consists of a small amount of a radioactive isotope ( radionuclide) mixed with a radioluminescent phosphor chemical. The radioisotope continually decays, emitting radiation particles which strike molecules of the phosphor, exciting them to emit visible light.

3. Day-Glo Color Corp. - Wikipedia

   en.wikipedia.org/wiki/Day-Glo_Color_Corp.

   Black light fluorescent paints were first developed by Fluor-S-Art Co. in the 1930s. The Day-Glo Color Corp. (also styled as DayGlo) is a privately held [2] American paint and pigments manufacturer based in Cleveland, Ohio. It was founded in 1946 by brothers Joseph and Robert Switzer and is currently owned by RPM International.

4. Blacklight paint - Wikipedia

   en.wikipedia.org/wiki/Blacklight_paint

   Blacklight paint. Black light paint or black light fluorescent paint is luminous paint that glows under a black light. It is based on pigments that respond to light in the ultraviolet segment of the electromagnetic spectrum. The paint may or may not be colorful under ordinary light. Black light paint should not be confused with phosphorescent ...

5. Optical brightener - Wikipedia

   en.wikipedia.org/wiki/Optical_brightener

   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 ...

6. Radioluminescence - Wikipedia

   en.wikipedia.org/wiki/Radioluminescence

   Radioluminescence is the phenomenon by which light is produced in a material by bombardment with ionizing radiation such as alpha particles, beta particles, or gamma rays. Radioluminescence is used as a low level light source for night illumination of instruments or signage. Radioluminescent paint is occasionally used for clock hands and ...

7. Phosphorescence - Wikipedia

   en.wikipedia.org/wiki/Phosphorescence

   Phosphorescence is a type of photoluminescence related to fluorescence. When exposed to light (radiation) of a shorter wavelength, a phosphorescent substance will glow, absorbing the light and reemitting it at a longer wavelength. Unlike fluorescence, a phosphorescent material does not immediately reemit the radiation it absorbs.