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Blacklight fluorescent tubes. The violet glow of a blacklight is not the UV light itself, but visible light that escapes being filtered out by the filter material in the glass envelope. A blacklight, also called a UV-A light, Wood's lamp, or ultraviolet light, is a lamp that emits long-wave ultraviolet light and very little visible light.
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.
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Download as PDF; Printable version; In other projects Wikidata item; Appearance. ... A black light is a lamp which operates near the ultraviolet range of light
The word "woke" is tossed around a lot in political and social debates all around the country. It's ramping up as Election Day draws near. The term carries different meanings and strong emotional ...